Mistral vs Claude: Large 4 vs Opus 5.5 on Price, Coding and Which to Use

Use Claude for long, hard build work. Its models are the ones Pat Simmons has put through blind-ranked builds, Opus 5.5 placed first in all four builds of his Gemini 4 Argon review, and Claude Code comes with every paid plan from $20 a month. Use Mistral when price or control comes first: its Pro plan costs $14.99 a month with $25.50 of API credit, Mistral Large 4 costs $0.70 per million input tokens on its API against $4 for Claude Opus 5.5, and Large 4 is open-weight, so you can download it and run it yourself.

Pat hasn't tested any Mistral model, so this page compares what the two companies publish. It makes no claim about which one writes or codes better.

Last checked November 9, 2026: plan prices on Mistral's pricing page and Anthropic's pricing page, per-token API rates on Mistral's API pricing page and Anthropic's, and the newest model on each side: Mistral Large 4, dated November 5, 2026, and Anthropic's Fable 5.2 and Opus 5.5.

Mistral vs Claude: which should you use?

Pick Claude for building apps, sites and games with a coding agent, and for the heaviest personal use. Pick Mistral for the lower monthly price, a coding agent on the free plan, cheaper API calls on its big model, and models you can run on your own hardware. The table goes job by job.

"Mistral AI vs Claude" and "Claude vs Mistral" are the same comparison. Mistral AI is the company, and its app is Vibe, which combines a chat assistant called Vibe for work (formerly Le Chat) and a coding agent called Vibe for code, per Mistral's Vibe page. Claude is both Anthropic's app and its family of models.

Mistral vs Claude for coding

Both include a coding agent, a tool that reads your project, writes and edits files, and runs commands for you. Mistral's is Vibe for code, and it comes on the Free plan with limited coding sessions and on Pro with "all-day coding in the CLI, IDE, or on web." Claude's is Claude Code, which starts on the $20 Pro plan and is not on Claude's Free plan.

Mistral's Vibe page says you can install its coding agent from your terminal, open it in VS Code, JetBrains or Zed, or start coding tasks in the Vibe web app and pick them up later in the terminal. For a separate look at Claude Code next to another coding app, see Cursor vs Claude Code.

On the model side, Anthropic's pricing page calls Opus 5.5 its "daily driver for agentic coding and enterprise work" and Sonnet 5.5 a "high-performance model for coding and agents." Mistral's coding-specific model in its API price list is Codestral, which Mistral describes as a code-completion model for quick, frequent tasks such as filling in code in the middle of a file.

Pat's evidence covers Claude only. All four builds in his Gemini 4 Argon review were coding jobs, and Opus 5.5 won each one (details below). He has run no Mistral model on any build, so there is no result to say which agent codes better.

How much does Claude Code cost per month?

Claude Code costs $20 a month on Claude Pro, or $17 a month if you pay $200 for the year. It is also on Max at $100 a month and Ultra at $200 a month, which add more usage, and on every Claude Team seat. Mistral's coding agent costs less: it is on the $0 Free plan with limited sessions, on Pro at $14.99 a month, on the $5.99 student plan and on Team at $24.99 per user.

US prices before tax, from both pricing pages on November 9, 2026. API credits are prepaid money for calling the company's models from your own code.

Claude's limits reset every five hours and every week, and Anthropic's page says how fast you reach them depends on the model, the length of your chats and the size of your files. More on what the free tier covers is in what Claude's Free plan includes.

What is the biggest Mistral model?

Mistral Large 4 is Mistral's biggest and newest model, version 26.10, dated November 5, 2026 on its model card. Mistral calls it "a state-of-the-art, open-weight, general-purpose multimodal model," meaning it reads images as well as text, and it is released under the Mistral Ecosystem Open Weight License.

The card lists 1.05 trillion parameters in total, with 52 billion of them active at a time, plus a 1.6 billion parameter part for reading images. It can take in up to 1 million tokens at once, the model's context window. A token is a small chunk of text, roughly a short word, and AI companies bill by the million.

Claude's lineup on Anthropic's pricing page has four current models:

• Fable 5.2, "next generation intelligence for long-running agents"
• Opus 5.5, the "daily driver for agentic coding and enterprise work"
• Sonnet 5.5, a "high-performance model for coding and agents"
• Haiku 5.5, the "fastest, most cost-efficient model"

Anthropic doesn't list model sizes there. Its plan table gives Claude a context window of up to 1 million tokens, depending on the model.

Mistral vs Claude API prices per million tokens

Mistral Large 4 costs $0.70 per million input tokens and $2.10 per million output tokens, against $4 and $20 for Claude Opus 5.5. That makes Opus 5.5 almost six times the price on input and more than nine times on output. Claude's smallest model, Haiku 5.5, is cheaper than Large 4 on short prompts.

US dollar list prices from Mistral's API pricing page and Anthropic's pricing page, checked November 9, 2026. Cached input is the cheaper rate for text the model has already read earlier in the same job; Anthropic's figure is its cache read price, and it also charges separately for writing to the cache.

The FAQ on Mistral's main pricing page still uses $0.50 and $1.50 as its example price for "Mistral Large." Mistral's API pricing page and the Large 4 model card both list $0.70 and $2.10, so those are the numbers in the table.

Both companies cut the price in half for batch jobs, where you send a pile of requests and wait for the answers. Mistral's FAQ says cached input cuts the input price by up to 90% for repeated prompts.

Can you run Mistral or Claude on your own computer?

You can run some Mistral models yourself. You can't run Claude yourself: Anthropic sells it through the Claude apps and its API, and its pricing page offers no model download. Mistral's pricing FAQ says "you can self-host our models anywhere," with open-weight models licensed for research and individual use and a separate Mistral license for commercial deployments. Open-weight means the trained model files are published for anyone to download.

• Mistral Large 4: open-weight, under the Mistral Ecosystem Open Weight License, at 1.05 trillion parameters
• Mistral Small 4: Apache 2.0, 119 billion parameters with 6.5 billion active, one model for chat, reasoning and coding
• Ministral 3 14B: Apache 2.0, which Mistral says is "optimized for local deployment," including on your own machine

For businesses, Mistral's Vibe page says Enterprise customers can run Vibe on their own servers, in a private cloud or on Mistral's cloud.

What Pat Simmons has tested so far (and what he hasn't)

Pat has tested Claude many times and Mistral never. The test this page draws on is his Gemini 4 Argon review, published October 14, 2026 on his YouTube channel, Pat Simmons. He gave the same four builds to Claude's Opus 5.5 and Fable 5.1, ChatGPT's GPT-6 Astra and Google's Gemini 4 Argon, then ranked each round blind.

Opus 5.5 placed first in all four: a photoreal 3D coffee bottle you can spin and pour, a product launch video, a car soccer game and a rebuild of a 3D-heavy website. Fable 5.1 placed second or third each time, and Argon came last in all four. The full results, costs and plan prices are in Claude vs ChatGPT vs Gemini on the same builds, and the two-way version is Claude vs Gemini.

Pat has also published full reviews of the two Claude models in the table above: the Opus 5.5 review and the Sonnet 5.5 review, each with its builds and what they cost. These were all build jobs. He hasn't compared Claude with Mistral on writing, research, everyday questions or anything else.

Questions people ask

Is Mistral free?

Yes. Mistral's Free plan costs $0 and includes the Vibe app on web and mobile with limited messages, web searches, coding sessions and image generation. Mistral's FAQ says the Free plan also covers Vibe for code in your terminal and Mistral Studio, its developer dashboard.

Is Claude free?

Yes. Claude's Free plan costs $0, with limited use every five hours and every week. It covers chat on web, desktop and mobile, web search, file creation and running code, and it doesn't include Claude Code or Opus.

Is Mistral open source?

Partly. Mistral Small 4 and Ministral 3 14B are released under the Apache 2.0 license, Mistral Large 4 is open-weight under Mistral's own Ecosystem Open Weight License, and Codestral's model card lists it as "Premier" with no open license. Mistral's FAQ adds that commercial deployments of its open-weight models need a separate Mistral license.

Le Chat vs Claude: what happened to Le Chat?

Le Chat is now Vibe. Mistral's Vibe page says "all your conversations, settings, and plans carry over," and the chat side is called Vibe for work. Comparing Le Chat with Claude today means comparing Vibe's plans with Claude's, as in the plan table above.

Mistral Pro vs Claude Pro: what's the difference?

Mistral Pro is $14.99 a month and includes $25.50 a month in API credits. Claude Pro is $20 a month, or $17 billed yearly, and includes Claude Code, Opus and Fable paid with usage credits; Claude's monthly API credits start on Max.

Devstral vs Claude Code: which should you use?

Devstral is a model and Claude Code is an app, so they don't line up directly. Mistral's Devstral 2 card, dated December 9, 2025, describes it as a model for coding agents and marks it deprecated. The Mistral product to put next to Claude Code is Vibe for code.

Mistral Large 4 vs Claude Opus 5.5: how do they compare?

On published facts, Large 4 is cheaper on the API ($0.70 and $2.10 per million tokens against $4 and $20) and downloadable. Large 4 takes up to 1 million tokens of context, and Anthropic lists up to 1 million for Claude, depending on the model. Opus 5.5 has Pat's build wins behind it. Pat hasn't run Large 4, so there's no test of the two on the same job.

Do Mistral's plans include API credits?

Yes. Pro includes $25.50 a month, per Mistral's pricing page. On Claude, Max includes $100 a month in API credits, Ultra $200 and Team up to $500 pooled across the team.

Sources

• Mistral: Pricing (checked November 9, 2026)
• Mistral Docs: API pricing (checked November 9, 2026)
• Mistral Docs: Mistral Large 4 model card
• Mistral Docs: Mistral Small 4 model card
• Mistral Docs: Ministral 3 14B model card
• Mistral Docs: Codestral model card
• Mistral Docs: Devstral 2 model card
• Mistral: Vibe (formerly Le Chat)
• Anthropic: Claude plans and API pricing (checked November 9, 2026)
• Pat Simmons: Gemini 4 Argon review and testing (YouTube)