Claude vs ChatGPT for coding
For coding, Claude means Claude Code and ChatGPT means Codex. Plans, prices, models and where each runs.
- Local servers
- Yes
- runs stdio servers
- Hosted servers
- Yes
- connects by URL
- Config
- CLI + JSON
- how servers are added
- Plugins
- Yes
- plugin marketplaces
Pick Claude if you want Claude models writing your code inside Claude Code. Pick ChatGPT if you want Codex, which is included in every ChatGPT plan and has a limited free version.
Both cost $20 a month to start in full (Claude Pro or ChatGPT Plus), run in a terminal and editor, and connect to the same MCP servers. Prices are as of November 2026.
Good for
- Developers choosing between a Claude and a ChatGPT plan
- ChatGPT subscribers who want to know if Codex is enough
- Claude subscribers curious about Codex
- Teams that want one instruction file for both
Side by side
Use Claude if Claude's models are the ones you trust with your code. Use ChatGPT if you already pay for it, want a free start or want an open-source agent.
| Option | Claude (Claude Code) | ChatGPT (Codex) |
|---|---|---|
| Free plan | No | Yes, limited |
| $20 plan | Claude Pro | ChatGPT Plus |
| Top personal plan | Ultra, $200/mo | Pro, $500/mo |
| Coding models | Opus 5.5 default | GPT-6.1 Sol, Luna |
| Runs in | Terminal, IDE, desktop, web | CLI, IDE, web, iOS |
| Agent is open source | No (all rights reserved) | Yes, Apache-2.0 |
| MCP servers | Yes | Yes |
| Instruction file | CLAUDE.md | AGENTS.md |
Which to pick
Our advice: already paying for ChatGPT? Start with Codex, since it is included. Want Claude models? Claude Pro at $20 a month is the way in. Both read AGENTS.md and share MCP servers, so trying the other costs little.
Claude Code needs a paid plan, Pro or higher. Codex on Free and Go is limited to the desktop app with GPT-6 Luna, and the CLI, IDE extension, web and iOS start with Plus.
Best for
- Claude: developers who want Opus or Sonnet writing their code
- Claude: teams already on a Claude Team or Enterprise plan
- ChatGPT: Plus, Pro or Business subscribers who want Codex at no extra cost
- ChatGPT: anyone who wants to try a coding agent on a free plan first
- ChatGPT: developers who want to read or change the agent's source
Skip it if
- Claude: you need a free plan, since Claude Code starts at Pro
- ChatGPT: you want no 5-hour estimates below Pro, since Plus lists them
Questions
Is Claude or ChatGPT better for coding?
Neither wins outright. Neither vendor publishes a head-to-head test, and results depend on your codebase and the model you pick. Both have a $20 plan, so run the same real task in each for a week.
Is Claude Code the same as Claude?
No. Claude is the chat assistant. Claude Code is a coding agent that reads your repo, edits files and runs commands in your terminal, editor, desktop app or browser. It comes with a paid Claude plan. See the Claude Code page.
Is Codex the same as ChatGPT?
No. Codex is OpenAI's coding agent, and it is included in ChatGPT plans. It runs in the CLI, the IDE extension, the web and on iOS on Plus and above. See the Codex page.
How much do they cost for coding?
Both start at $20 a month (as of November 2026). Claude Pro is $17 a month billed yearly, Max is $100 and Ultra is $200. ChatGPT Plus is $20, and Pro is $100, $200 or $500. Codex also has a limited version on the Free and $8 Go plans.
Can I use Claude Code for free?
No. The Claude Free plan does not include Claude Code. You need Pro or higher, or you can pay per token with an API key from the Claude Console.
Is there a free coding agent in ChatGPT?
Partly. ChatGPT Free and Go users get Codex with the GPT-6 Luna model in the desktop app, subject to rollout. The CLI, IDE extension, web and iOS start with Plus.
Do both support MCP servers?
Yes. Both connect to local servers and to hosted servers that sign you in. Claude Code adds one with claude mcp add. Codex uses codex mcp add or ~/.codex/config.toml. See what MCP is.
Can one instruction file serve both?
Yes. Codex reads AGENTS.md, and Claude Code can read an existing AGENTS.md in place of its own CLAUDE.md.
What is the tool-to-tool comparison?
See Claude Code vs Codex for the agents head to head, without the chat apps.
Information
updated Nov 3, 2026
- Transports
- stdio, SSE, Streamable HTTP
- Config file (all)
.mcp.json (project) or ~/.claude.json (user)- MCP docs
- code.claude.com
Sources
Docs, issue trackers and discussions this page is built from.
Show all 7Hide
- Claude plans and pricing · claude.com
- Codex pricing · learn.chatgpt.com
- Claude Code overview · code.claude.com
- Claude Code model configuration · code.claude.com
- anthropics/claude-code LICENSE · github.com
- openai/codex · github.com
- Model Context Protocol (ChatGPT Learn) · learn.chatgpt.com