Overview
Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, and complex...
Our take
The headache this model sets out to remove is stitching together separate tools for reasoning, coding and image understanding. Mistral Medium 3.5 is a dense 128B instruction-following model that takes text and images and returns text, built for agentic workflows, coding and complex tasks, with a 262,144-token context window, chain-of-thought reasoning, tool and function calling and structured JSON output. That suits a job like reviewing a long technical document alongside a diagram and returning a structured plan an automated pipeline can act on directly. Against its alternatives, general assistants such as Claude, ChatGPT, Gemini and Claude Sonnet 5 are broad conversational systems, whereas this is a single dense model you can slot into agentic and coding pipelines with predictable JSON output. The clear caveat is cost: pricing is above average at $1.50 per million tokens, with input flagged at $1.5 per million and no free tier, which makes it one of the pricier options in this group. Ideal for teams who want a capable, tool-fluent model for agentic and coding work and can justify the higher rate. The verdict: a reasonable pick when its long context and structured output earn their keep, and one to pass over if budget is the deciding factor and a cheaper model would do.
How Mistral: Mistral Medium 3.5 stacks up
Among the 15 chatbots & llms tools in our directory, it ranks #11 of 15 on quality (8.1/10), 4% below the 15-tool average of 8.5, and its $1.5/1M input-token rate is in the premium end — 25% cheaper than the 10-model average of $1.99/1M.
Weighing quality against cost, Mistral: Mistral Medium 3.5's cost-per-quality-point of $0.19 places it at #8 of 10 for value among chatbots & llms tools.
Mistral: Mistral Medium 3.5 in depth
Mistral: Mistral Medium 3.5, built by Mistral AI, sits in the chatbots & llms space and is a paid tool starting at $1.50/1M tokens. Our editors rate it 8.1 out of 10 based on capability, ecosystem and value. It handles a context window of 262,144 tokens.
On the feature side, Mistral: Mistral Medium 3.5 brings 262,144-token context window, vision (image input), reasoning / chain-of-thought and tool / function calling. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.
Its biggest strength is built-in reasoning (chain-of-thought) mode for harder problems, while the main trade-off to weigh is that above-average api pricing ($1.5 per 1m input tokens). Keep both in mind when deciding whether it fits your workflow.
Mistral: Mistral Medium 3.5 is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.
Key features
- ✓262,144-token context window
- ✓Vision (image input)
- ✓Reasoning / chain-of-thought
- ✓Tool / function calling
- ✓Structured (JSON) outputs
Pricing
Pros
- +Built-in reasoning (chain-of-thought) mode for harder problems
- +Accepts images as input (vision-capable)
- +Supports tool / function calling for agent-style workflows
- +Can return structured JSON output for reliable parsing
Cons
- −Above-average API pricing ($1.5 per 1M input tokens)
Who should use Mistral: Mistral Medium 3.5
- →Anyone looking for a chatbots & llms tool from Mistral AI.
- →Teams and individuals focused on research and writing.
- →People who value built-in reasoning (chain-of-thought) mode for harder problems.
- →Workflows that need a 262,144 tokens context window.
Who should look elsewhere
- →Anyone who needs a free tier — this tool is paid only.
- →Those for whom above-average api pricing ($1.5 per 1m input tokens) is a dealbreaker.
Best for
10 Best Mistral: Mistral Medium 3.5 Alternatives in 2026
Mistral: Mistral Medium 3.5 is a strong chatbots & llms tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to Mistral: Mistral Medium 3.5, ranked and compared.
Anthropic
Claude is Anthropic's family of AI assistants, known for long-context reasoning, careful writing and strong coding…
OpenAI
ChatGPT is OpenAI's flagship conversational AI, powering hundreds of millions of weekly users across web, mobile and…
Google DeepMind
Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel…
DeepSeek
DeepSeek is a Chinese AI lab that stunned the industry with frontier-level reasoning models at a fraction of typical…
Perplexity AI
Perplexity is an AI answer engine that combines live web search with large language models to deliver cited, up-to-date…
Alibaba Cloud
Qwen is Alibaba's series of open-weight models spanning chat, coding, vision and math.
Mistral AI
Mistral AI is a European lab offering both open-weight and commercial models that punch well above their size.
xAI
Grok is xAI's assistant, tightly integrated with the X platform and trained with a distinctively candid, witty persona.
Meta
Llama is Meta's family of open-weight large language models that became the de-facto foundation for the open-source AI…
Cohere
Cohere's Command models are purpose-built for enterprise retrieval-augmented generation and agentic workflows.
Mistral: Mistral Medium 3.5 vs top alternatives
A side-by-side look at how Mistral: Mistral Medium 3.5 stacks up against its closest rivals.
| Feature | Mistral: Mistral Medium 3.5Mistral AI | ClaudeAnthropic | ChatGPTOpenAI | GeminiGoogle DeepMind |
|---|---|---|---|---|
| Quality score | 8.1 / 10 | 9.6 / 10 | 9.5 / 10 | 9.2 / 10 |
| Starting price | $1.50/1M tokens | $20/mo | $20/mo | $20/mo |
| Free tier | No | Yes — Free tier available | Yes — Free tier available | Yes — Free tier available |
| API input price | $1.5 / 1M tokens | $8 / 1M tokens | $1 / 1M tokens | $1.5 / 1M tokens |
| API output price | $7.5 / 1M tokens | $40 / 1M tokens | $5 / 1M tokens | $7.5 / 1M tokens |
| Speed | — | Fast | Fast | Fast |
| Context window | 262,144 tokens | 200K tokens | 128K tokens | 1M-2M tokens |
| Categories | Chatbots & LLMs | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing |
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Frequently asked questions
Q. Is Mistral: Mistral Medium 3.5 free?
No — Mistral: Mistral Medium 3.5 is a paid tool, starting at $1.50/1M tokens.
Q. How much does Mistral: Mistral Medium 3.5 cost?
Mistral: Mistral Medium 3.5 starts at $1.50/1M tokens. API usage is around $1.5 per 1M input tokens and $7.5 per 1M output tokens.
Q. What is Mistral: Mistral Medium 3.5 best for?
Mistral: Mistral Medium 3.5 is best suited to research and writing, within the chatbots & llms category.
Q. What are the best Mistral: Mistral Medium 3.5 alternatives?
Popular alternatives to Mistral: Mistral Medium 3.5 include Claude, ChatGPT, Gemini and DeepSeek. Each trades off price, quality and ecosystem differently.
Q. Is there a free alternative to Mistral: Mistral Medium 3.5?
Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.
Q. Why switch from Mistral: Mistral Medium 3.5?
Common reasons include pricing, specific feature gaps (Above-average API pricing ($1.5 per 1M input tokens)), data-privacy requirements, or simply wanting a tool that fits your stack better.
How we rate AI tools
Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.
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