Building with AI, together

Poly (usepoly.co) is a multiplayer AI coding workspace: a shared room where your team works with one AI agent. What it does, costs, and isn't.

Multiplayer AI is AI several people use together in one shared session. The three meanings in 2026, what makes it truly multiplayer, and where to try it.

A team steering one AI coding agent together, live, in one shared session — what it requires, how it differs from multi-agent, what it looks like.

A multiplayer AI coding workspace is where several people work with AI coding agents on one codebase, together. Its three shapes and who makes which.

Short definitions of the terms used in Poly and multiplayer AI coding: shared agent session, room, turn, receipt, approval card, modes and more.

Vibe coding is building software by describing it to an AI without reviewing the code. Where the term comes from, where it works, its risks, the tools.

Neither Claude Code nor Codex has native multi-user sessions. What each option shares: setup, session links, agent teams, Claude Tag and shared rooms.

What Claude Code costs a team in 2026: Team seats $20–25, premium $100–125, Enterprise $20 plus API usage. What each adds and how to work in one session.

Open the chat, select Share, and pick a link, specific people or your org. Others can read it but not reply. Steps for every plan, and the limits.

OpenAI retired ChatGPT group chats on July 9, 2026: nobody can start or join one. What happens to old chats, and where a group can talk to one AI now.

Where friends can talk to one AI in the same chat in 2026, now ChatGPT and Copilot group chats are gone: Meta AI, Snapchat, Poe, Jenova and Poly.

Claude Tag is one shared Claude in Slack for Team and Enterprise plans. Microsoft Teams is announced, waitlist only, no date. Pricing, setup and limits.

Share a ChatGPT chat by link: personal links are public snapshots, workspace links stay in your company, and continuing makes a private copy. All options.

Codex for a team means ChatGPT Business: standard seats $20–25, premium $100–125 with 5x usage and no five-hour limit. Enterprise, API and sharing.

AI trip planners that work for a group in 2026: Mindtrip's group chat, Wanderlog, Pilot, Stippl, Google lists, Airbnb wishlists and Poly's shared board.

No. Claude Code needs a paid Claude plan (Pro from $17 a month), a Team or Enterprise seat, or API credits. The free ways to try it, as of October 2026.

Yes, with some setup: you don't need to code, and the desktop app runs Claude Code without a terminal. What beginners still do, and the safety settings.

Partly. ChatGPT Free and Go include Codex with GPT-6 Luna in the desktop app; cloud tasks need Plus ($20). Plus the open-source CLI and student credits.

Six properties to check before a team shares one AI coding agent, from a fresh sandbox per run and no open internet to approvals from any seat.

A playbook for using one AI coding agent during an incident without five people typing at once: roles, modes, and the record for the postmortem.

Nine questions to ask before a team picks a multiplayer AI coding workspace, from approvals and costs to sandboxing, with what a good answer looks like.

At fifty engineers, multiplayer AI coding is three needs: parallel agents, governance, and shared rooms for product and ops. Which tools fit each.

How Poly, Copilot's coding agent, Cursor, AQ, Superconductor and 143 work with a GitHub repo: who commits, how changes land, and what stays out of git.

Gemini CLI stopped serving free, AI Pro and Ultra accounts on June 18, 2026. What still works, the free API key question, and moving to Antigravity CLI.

Every way to share a Claude Code session, October 2026: web links, /export, transcripts and third-party tools, and which ones let a teammate type in.

No: Claude's chat app has no group chat. Where several people can work with one Claude in 2026: Claude Tag in Slack, Claude Design, Docs and artifacts.

How several people vibe code one app together in 2026: shared AI chats, a copy per person, or one live agent session, with prices and how to stay safe.

YC's Multiplayer AI request (Fall 2026, Aaron Epstein) asks for agents teams use together, as Docs and Figma did. What it says and who builds it today.

How approvals work in Claude Code, Codex, Cursor and Copilot in 2026, and which tools let someone other than the agent's runner approve a change.

Codex collaboration mode explained: Plan and Default, switching with Shift+Tab or /plan, what happened to Pair Programming, and how teams share Codex.

Only Team and Enterprise can share Claude projects, inside your org, as Can view or Can edit. The steps, Cowork projects, and what to do on Pro or Max.

Every ChatGPT plan shares projects, Free included. ChatGPT reads every chat in a shared project but never members' personal memory. Limits and roles.

Claude Code shares your plan's five-hour and weekly limits: Max is 5x or 20x Pro, Team standard 1.25x and premium 6.25x. How resets work and what to do.

Two ways to connect Claude Code and Slack: start work from a channel with Claude Tag, or give Claude Code your Slack through its MCP plugin. Setup.

VS Code Live Share is in maintenance mode and Code With Me is ending. The real-time collaborative coding tools that still work in 2026.

AI pair programming means coding with an AI partner while you review every change. Where the term comes from, what studies found, and 2026 tools.

Claude Code agent teams are experimental parallel sessions that message each other; subagents report back. Setup, tmux, costs, limits and skills.

Cursor Teams seats cost $30, $100 or $200 a user a month since October 12, 2026. Weekly per-seat pools, other labs at API price, and the legacy $40 seat.

Claude Code on the web runs sessions in Anthropic's cloud from claude.ai/code or the Claude app. Plans, GitHub repos, MCP, sharing and limits.

CLAUDE.md vs AGENTS.md in 2026: Claude Code now reads AGENTS.md, most other agents do too, and one import makes both work. Locations and team setup.

Claude Code pricing in 2026: Pro $20 ($17 annually), Max $100 or $200, Team $20 to $125 a seat, Enterprise $20 plus usage, or API pay per token.

Claude Code best practices from Anthropic and Boris Cherny, who created it: let Claude verify its work, plan first, keep CLAUDE.md short, manage context.

How to use OpenAI's Codex in 2026: the ChatGPT desktop app, terminal, VS Code, the cloud and your phone. Install, sign-in, permissions and AGENTS.md.

How to use Claude Code in 2026: the one-line install for Mac, Linux and Windows, signing in, your first session, permission modes, VS Code and fixes.

Use Claude Code from your phone: Remote Control drives a session on your computer, cloud sessions run on Anthropic's machines. Setup, plans and fixes.

The best AI tools for a 24 to 48 hour hackathon in 2026: builders, agents, free models and hosting, what a team can share, and what MLH rules say.

Claude Code skills in 2026: a folder with a SKILL.md that Claude loads when relevant. Where skills live, the frontmatter, marketplaces and sharing.

How to set up MCP servers in Claude Code: claude mcp add, the three scopes, the .mcp.json format, OAuth with /mcp, limits, popular servers and fixes.

OpenAI's account sharing policy: one account per person, and sharing can get it deactivated. No family plan. What happens, and the allowed ways to share.

Claude Code hooks run commands at points in a session, like before a tool call. The 33 events, configuration, exit codes, examples and security.

Run Claude Code in GitHub Actions: /install-github-app, @claude in issues and PRs, a minimal workflow, costs, managed Code Review and security.

Claude Code plan mode: Claude researches and proposes a plan without editing code, then you approve or edit it. Shift+Tab, /plan, opusplan and more.

Claude Code's context window is 1 million tokens on every current model and plan. What fills it, /context, auto-compaction, /compact vs /clear.

How to use git worktrees with Claude Code: claude --worktree, .worktreeinclude for .env files, subagents in worktrees, cleanup and pitfalls.

How Claude Code remembers: the CLAUDE.md files you write, .claude/rules, imports, and the auto memory Claude writes itself. Where each lives, what loads.

Is Claude Code safe? Permission modes and their limits, prompt injection, /sandbox, dev containers, data use, 33 advisories, and a security checklist.

The Claude Agent SDK is Claude Code's agent loop and tools as a Python or TypeScript library. Setup, core options, API pricing and subscription rules.

Claude Code plugins package skills, commands, subagents, hooks and MCP servers you install with /plugin. The official marketplace, top picks and safety.

How to cut Claude Code's token use, from Anthropic's cost guide: /clear between tasks, Sonnet over Opus, fewer MCP servers, subagents, and measuring.

Every Claude Code slash command that matters in 2026, grouped, plus custom commands with $ARGUMENTS, keyboard shortcuts and Codex's equivalents.

Claude Code subagents: the built-in Explore and Plan agents, writing your own in .claude/agents, models, parallel runs, examples, and skills vs teams.

Set up the Claude Code status line: /statusline, the statusLine setting, the JSON fields (model, context, cost, limits), examples, and why it's blank.

Claude Code headless mode: run claude -p in scripts and CI. Output formats, key flags, permissions with nobody there, server login, and --bare.

Install Claude Code with one command on Mac, Linux, WSL or Windows, or with Homebrew, WinGet, apt, dnf or npm. Requirements, sign-in, updates and fixes.

Install Claude Code on Windows with one PowerShell command, CMD, WinGet or WSL. Native vs WSL, Git for Windows, the PATH fix and every common error.

Install OpenAI's Codex CLI with one command on Mac, Linux or Windows, or with npm or Homebrew. Signing in with ChatGPT or an API key, updates and fixes.

An AI workspace is where a team works with AI, but most give each person their own AI over shared docs. Notion, ChatGPT, Claude, Copilot, Manus, Poly.

How to play D&D with an AI Dungeon Master in 2026, alone or with friends: Friends & Fables, AI Dungeon, Voyage, and fixing AI DMs' memory and dice.

Multi-model AI coding means building one codebase with models from several labs. How Poly runs 11 models from four labs in one room, and what carries.

Yes in Claude, Claude Code and Codex: change the model or effort mid-chat and the next reply uses it. What carries over, what it costs, and ChatGPT.

Sonnet 5.5 costs half as much as Opus 5.5 ($2/$10 vs $4/$20 per million tokens) and comes close on coding. Benchmarks, effort levels and defaults.

Opus 5.5 costs $4/$20 per million tokens to Fable 5.1's $10/$50 and leads most of Anthropic's own benchmarks. When Fable 5.1 still earns its price.

Fable 5.1 and GPT-6 Astra both cost $10/$50 per million tokens. Astra leads most coding benchmarks and costs less per task; where Fable is ahead.

Kimi K3.1 Pro scores within two points of Claude Opus 5.5 on an independent coding test at a third of the cost per task. Prices, plans, license, free use.

Claude Opus 5.5 leads both independent coding rankings in October 2026. The best model for each job, from frontier to cheap, with prices.

Claude and ChatGPT are close for coding in 2026: Opus 5.5 tops LMArena WebDev, and GPT-6 Astra and Fable 5.1 tie on Terminal-Bench. Models and prices.

Models from different labs in one conversation read every earlier reply as their own. What happened when Muse claimed Claude's work, and the two fixes.

Having a second lab's model review the first one's code can raise pass rates, but order matters. What a 2026 study found, and how a team does it.

Muse Spark is Meta's AI model family, now at version 1.3: 1M context, $1.25 and $4.25 per million tokens on its API, free in the Meta AI app and Poly.

DeepSeek V4.1 Flash costs $0.30 and $1.20 per million tokens to Claude Sonnet 5.5's $2 and $10, but scores 32% to 64% on an independent agent test.

GLM-5.3, Z.ai's latest model, costs $1.40 and $4.40 per million tokens and scores 38.9% on an independent agent test to Claude Opus 5.5's 65.2%.

Alibaba's Qwen coding models in 2026: Qwen3-Coder-Next (80B, Apache 2.0), why Qwen 3.8 now replaces it, local sizes, API prices and the Qwen Code CLI.

The best open-weight coding models in October 2026, Kimi K3.1 Pro, GLM 5.3, Qwen 3.8 and DeepSeek V4.1, with independent scores, licenses and local sizes.

ChatGPT Business and Claude Team both cost $20 a seat annually or $25 monthly in 2026 ($100–125 premium). What each includes and where they differ.

Replit, Lovable, Bolt, AQ and Poly compared for two cofounders building with AI: who steers, who approves, who pays, and setup. Honest verdicts.

Replit gives each teammate their own AI thread on a shared project, merged later. Poly gives a team one AI they steer together. Which fits whom.

Lovable builds full-stack apps from prompts, with drafts and hosting. Poly puts a team in one session with one AI they steer together. Which fits.

Claude Tag puts one Claude in a Slack channel for Team and Enterprise. Poly puts one AI from any of four labs in a browser room any team can open.

AQ runs agent CLIs on a VM your team joins live, terminal first. Poly runs one AI in a browser room with approvals, receipts and a preview. Compared.

Coshell is a self-hosted multiplayer workspace on OpenCode, with your own keys. Poly is hosted, needs no keys, and adds approvals and receipts. Compared.

Superconductor runs many agents in cloud sandboxes around tickets, mostly on your own subscriptions. Poly is one room, one AI, no keys, with approvals.

Yes: these are the tools where several people work with one AI agent at once in 2026, in Slack, group chats and coding workspaces. Prices and verdicts.

Cursor's cloud agents can be shared by link and followed up under the creator's credentials. In Poly every member prompts and approves each change.

Slack Code opens a temporary channel where anyone can direct a coding agent. Poly is a dedicated room with approvals, receipts and models included.

Sharkly is a tracker that assigns tickets to AI agents on your own machines. Poly is a browser room where a team steers one AI together. Compared.

HumanLayer shares a running Claude Code or Codex session on your machines, from $100 a user. Poly does it in a browser room, no setup, from $20.

Delta is Zed's multiplayer app for coding with agents, in beta since Sept 16, 2026: shared threads, no permission prompts. How it compares to Poly.

Tutti VM brings each teammate's own agent into a shared cloud room from a desktop app. Poly is a browser room where a team steers one AI together.

Mosaic (YC) syncs everyone's agent sessions into one shared place, from a macOS CLI. Poly is a browser room where a team steers one AI live. Compared.

qm is YC's open-source multiplayer agent harness you deploy yourself, where only the requester approves. Poly is hosted and any member approves.

Six Replit alternatives for two founders building one product with AI: Lovable, Bolt, Poly, AQ, Superconductor and Zed's Delta. Prices and gaps.

Lovable alternatives judged on teamwork: can several people prompt one AI, who approves, and who pays. Bolt, v0, Replit, Base44, Figma Make and Poly.

Seventeen ways a team can use Claude Code together, sorted by what each shares: Anthropic's options, live sessions, shared workspaces and Slack agents.

Claude Code and Codex compared, October 2026: prices, usage limits, free tiers, where each runs, safety controls, team features and which to pick.

Every free way to code with AI in October 2026: Codex, Claude, Gemini and Antigravity, Copilot, Cursor, Kiro, local models and Poly, with real limits.

Claude Code alternatives, October 2026: Codex CLI, OpenCode, Cline, Kilo, Goose, Qwen Code, Grok Build, Copilot CLI, Antigravity and more, with licenses.

Grok Build vs Claude Code in 2026: xAI's open-source coding agent against Anthropic's, with prices, models, permission modes and benchmarks.

Google Antigravity vs Claude Code: a free tier against paid plans, Gemini against Claude, where each runs, autonomy settings and benchmarks.

Lovable vs Bolt in 2026: what each builds, backends, credits vs tokens, mobile apps, GitHub, security, and who pays when a team shares a project.

Claude Code vs Cursor in 2026: an agent against an AI editor. Prices, usage, models and team plans, and why many run Claude Code inside Cursor.

Cursor alternatives: VS Code with Copilot, Devin Desktop (ex-Windsurf), Zed, Kiro, Antigravity, JetBrains AI, Cline, Kilo and coding agents, with prices.

Conductor runs parallel coding agents on your Mac or in its cloud, now with multiplayer. Poly is a browser room where a team steers one AI together.

Nimbalyst is an open-source desktop workspace for Claude Code and Codex where teams share docs and trackers. Poly is a room where a team steers one AI.

Claude Code vs GitHub Copilot after Copilot's June 2026 move to usage billing: prices, AI credits, Claude models in Copilot, agents and the CLI.

Claude Code is for coding, Cowork (now part of Claude) for knowledge work, and the desktop app holds both. Where each runs, MCP, limits and tokens.

Replit vs Lovable in 2026: Replit builds web and native mobile apps with the code in reach; Lovable builds web apps for non-coders. Prices and credits.

AI code review tools compared for 2026: CodeRabbit, Copilot, Claude Code, Codex, Bugbot, Greptile, Graphite, Qodo and more, with prices and benchmarks.

The best AI coding agents in October 2026 by independent benchmarks: Claude Code leads, Codex is close behind. Free options, prices and real usage.

ChatGPT Business is self-serve at $20–25 a seat, up to 200 seats. Enterprise is custom-priced and adds SCIM, retention, residency, EKM and a BAA.

Devin vs Claude Code in 2026: Cognition's autonomous cloud agent and Devin Desktop against Anthropic's agent. Plans from $20, benchmarks and teams.

Claude Team is $20–25 a seat with usage included, for 2–150 people. Enterprise is $20 a seat plus API-rate usage and adds SCIM, audit logs and a BAA.

GitHub Copilot alternatives for VS Code, Visual Studio and JetBrains in 2026: Claude Code, Codex, Cursor, Antigravity, Cline and more, free ones too.

OpenCode vs Claude Code in 2026: an MIT-licensed agent for any model against Anthropic's. Claude subscriptions, pricing, benchmarks and token use.

Codex vs Cursor in 2026: OpenAI's agent, in every ChatGPT plan, against the multi-model AI editor. Pricing, limits, benchmarks and OpenAI's exit.

v0 vs Lovable in 2026: Vercel's full-stack Next.js builder against Lovable's no-code app builder. Plans, credits, backends, GitHub and teams.

Claude Max vs Pro in 2026: Max 5x ($100) and 20x ($200) give five or twenty times Pro's usage, Fable models and priority access. The rest is the same.

The best vibe coding tools in 2026: Lovable, Replit, Bolt, v0 and ChatGPT Sites without code; Claude Code, Codex and Cursor for developers. Free tiers.

Kiro vs Claude Code in 2026: AWS's spec-driven IDE against Anthropic's agent. Credits and multipliers, specs, hooks, teams on AWS and benchmarks.

Cursor vs Windsurf in 2026: Windsurf is now Devin Desktop, with the Devin Local agent and cloud handoff. Pricing, agents, models and who uses which.

Google Antigravity vs Cursor in 2026: a free-to-start agent app with plan reviews against the AI editor with cloud agents. Pricing, models, data use.

ChatGPT Plus vs Pro in 2026: Plus is $20; Pro is $100, $200 or $500 with more usage, GPT-6 Pro and larger context. What each tier gets, and when to pay.

Gemini vs Claude for coding in 2026: Claude Opus 5.5 leads WebDev and Terminal-Bench, Gemini 3.8 Flash costs a fraction. Benchmarks, prices, tools.

Base44 vs Lovable in 2026: Base44 lets you pick the model and makes app-store files; Lovable has two-way GitHub sync. Plans, code ownership, training.

ChatGPT vs Claude in 2026: both free to start and $20 for the main plan. ChatGPT makes images; Claude ranks higher on coding votes. Prices and privacy.

Cline vs Claude Code in 2026: Cline is free, open source and works with any model and key; Claude Code is Anthropic's agent from $20. Pricing, benchmarks.

Aider vs Claude Code in 2026: how each works, models and API keys, cost, git, MCP, benchmarks, whether Aider is still maintained, and alternatives.

Microsoft Copilot vs ChatGPT in 2026: free tiers, Microsoft 365 Personal $9.99 and Premium $19.99 against ChatGPT Plus $20, Copilot at work, and data.

Where your work runs, what the AI can reach, how keys and secrets are handled, who sees a room, and where your data lives. Plain answers from Poly.

Claude Fable 5.1 costs $10 per million input tokens and $50 output, with $0.25 cache reads. Which Claude plans include it, and how it compares.

Since October 12, 2026, Cursor comes with the X Subscription: Plus $8, Premium $30, Super $100, Ultra $200. Teams seats, legacy plans and model costs.

Lovable pricing in 2026: Free with 5 credits a day, Pro from $25 for 100 credits, Business from $50. What a message costs, Cloud usage and top-ups.

GitHub Copilot pricing in 2026: Free, Pro $10, Pro+ $39, Max $100, Business $19, Enterprise $39, and Copilot in GitHub Enterprise. Credits, Fusion.

Codex plans in 2026: Codex comes with every ChatGPT plan, from Free and Go to Pro $500 and Business. Usage limits, credits, API prices and student credits.

Replit pricing in 2026: Starter free, Core $20 with $20 of credits, Pro from $100 for up to 15 builders. How Agent pricing, Free Mode and hosting work.

Windsurf pricing in 2026: Windsurf is now Devin Desktop, with Free, Pro $20, Max $200 and Teams from $80. How the quotas work and legacy plans.

v0 pricing in 2026: Free with 7 messages a day, Plus $30 a user, Business $100. Token rates per model, why short prompts cost more, and hosting.

Bolt.new pricing in 2026: Free with 1M tokens a month, Pro from $25 for 10M, Teams $30 a member. How tokens, rollover and hosting work, and who pays.

Google stopped selling Gemini Code Assist on October 9, 2026, and it has no free tier. Prices for existing customers, renewal deadlines, limits, security.

ChatGPT Business costs $20 a user a month billed annually or $25 monthly, for 2 to 200 seats; premium seats $100 or $125. Limits, credits and Codex.

OpenAI doesn't publish ChatGPT Enterprise pricing. How it's billed (a shared credit pool, or seats plus tokens), what it includes, and how to estimate it.

Claude Team costs $20 a seat billed annually or $25 monthly, and premium seats $100 or $125, for 2 to 150 people. Limits, extra usage and API credits.

Claude Enterprise costs $20 a seat a month, billed annually, plus all usage at API rates: 20-seat minimum self-serve, 50 through sales. Real cost examples.

Claude API prices per million tokens: Opus 5.5 $4 and $20, Sonnet 5.5 $2 and $10, Haiku 5.5 $0.10 and $0.50, Fable 5.1 $10 and $50. Caching, batch, tiers.

OpenAI API prices per million tokens: GPT-6 Astra $10 and $50, GPT-6.1 Sol $2 and $10, GPT-6.1 Terra $1 and $5, GPT-6 Luna $0.10 and $0.50, plus tiers.

Base44 pricing: Free, Starter $20, Builder $50, Pro $100 and Elite from $200 a month, 20% less yearly. Message and integration credits, limits and fees.

DeepSeek API prices per million tokens: V4.1 Flash $0.30 input and $1.20 output, V4 Pro $1.32 and $3.96, half price off-peak, cache hits from $0.006.