Claude vs ChatGPT

Neither wins outright. Neither vendor publishes a head-to-head test, and the answer depends on your task. Run the same real prompt on both free plans before you pay.

Our advice: use Claude if you want Claude models, Claude Code and Cowork. Use ChatGPT if you want an $8 plan, a $500 top tier or an open-source coding agent (Codex CLI).

ChatGPT is cheaper at the entry: Go is $8 a month and Claude's cheapest paid plan is Pro at $20. Both have $20 and $100 plans, and the top personal plan is $200 on Claude (Ultra) and $500 on ChatGPT (Pro) as of November 2026. See Claude pricing for the full list.

They differ. Claude Free has chat, web search, file creation, memory and connectors, with limited usage every 5 hours and every week, but no Opus and no Claude Code. ChatGPT Free includes Codex with GPT-6 Luna in the desktop app, subject to rollout.

Each plan includes a coding agent. Claude Code needs Claude Pro or higher. Codex starts on ChatGPT Plus for web, terminal and editor use, with a limited version on Free and Go. Compare Claude Code and Codex for the details.

Yes. Both support MCP, the open standard for connecting AI to tools. Claude calls these connectors and lists connecting apps and tools on every plan including Free. ChatGPT delivers them as plugins. Read what MCP is or see how to add an MCP server to ChatGPT.

Both are agents for multi-step tasks beyond coding, such as research, documents and spreadsheets. Cowork runs in the cloud and needs a paid Claude plan. Work is included in ChatGPT plans from Free and shares usage with Codex.

Free and Go are moving to GPT-5.6 Luna as the default and get unlimited everyday text chats, subject to OpenAI's abuse safeguards; file uploads, images and voice have separate limits. Plus gets GPT-6 at Medium and High thinking, plus GPT-5.6 Sol, but not Extra High or the Pro setting, which are in Pro, Business and Enterprise. GPT-6 is rolling out to eligible paid accounts. The OpenAI pages we read give no message count for Plus chat and say caps may apply in high demand. As of November 2026.

Claude's pricing page says up to 1 million tokens, depending on the model. OpenAI's pricing page lists a total context window for chat of 54K for GPT Instant and 256K for reasoning models on Plus (Free: 27K Instant; Pro: 128K Instant, 400K reasoning), without naming a unit. In ChatGPT Work and Codex, OpenAI's docs give GPT-6.1 Sol a 500,000-token default window. As of November 2026.

On personal plans both default to an opt-out. Claude's pricing page lists model training as opt-out on Free, Pro, Max and Ultra. OpenAI says it may train on content from Free, Plus and Pro, and data sharing is on by default; turn off Improve the model for everyone in Settings > Data controls, or use its Privacy Portal. Feedback with thumbs up or down can still send that whole conversation for training. Temporary chats are not used. Business, Enterprise and Edu workspaces are not used for training by default.