Model Comparison
Claude Sonnet 4.6 vs Mistral Medium 3.5Which is better in 2026?
Claude Sonnet 4.6 significantly outperforms across most benchmarks. Mistral Medium 3.5 is 2.0x cheaper per token.
Verdict: Claude Sonnet 4.6 vs Mistral Medium 3.5 — which is better?
Claude Sonnet 4.6 (by Anthropic) and Mistral Medium 3.5 (by Mistral AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Claude Sonnet 4.6 outperforms in 2 benchmarks (BrowseComp, SWE-Bench Verified), while Mistral Medium 3.5 is better at 0 benchmarks. Claude Sonnet 4.6 significantly outperforms across most benchmarks.
On price, Mistral Medium 3.5 is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Mistral Medium 3.5 also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Claude Sonnet 4.6 if…
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
Choose Mistral Medium 3.5 if…
- cost matters — it's about 2.0x cheaper per token
- you process long inputs — it offers a 256,000 token context window
- you want the most recent training data — it shipped Apr 2026
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Claude Sonnet 4.6 outperforms in 2 benchmarks (BrowseComp, SWE-Bench Verified), while Mistral Medium 3.5 is better at 0 benchmarks.
Claude Sonnet 4.6 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 4.6 ($3.00/1M tokens) is 2.0x more expensive than Mistral Medium 3.5 ($1.50/1M tokens).
For output processing, Claude Sonnet 4.6 ($15.00/1M tokens) is 2.0x more expensive than Mistral Medium 3.5 ($7.50/1M tokens).
In conclusion, Claude Sonnet 4.6 is more expensive than Mistral Medium 3.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Mistral Medium 3.5 accepts 256,000 input tokens compared to Claude Sonnet 4.6's 200,000 tokens. Mistral Medium 3.5 can generate longer responses up to 256,000 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.
Input Capabilities
Supported data types and modalities
Both Claude Sonnet 4.6 and Mistral Medium 3.5 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Sonnet 4.6
Mistral Medium 3.5
License
Usage and distribution terms
Claude Sonnet 4.6 is licensed under a proprietary license, while Mistral Medium 3.5 uses Modified MIT License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Modified MIT License
Open weights
Release Timeline
When each model was launched
Claude Sonnet 4.6 was released on 2026-02-17, while Mistral Medium 3.5 was released on 2026-04-29.
Mistral Medium 3.5 is 2 months newer than Claude Sonnet 4.6.
Feb 17, 2026
3 months ago
Apr 29, 2026
1 months ago
2mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Sonnet 4.6 is available from Anthropic. Mistral Medium 3.5 is available from Mistral AI.
Claude Sonnet 4.6
Mistral Medium 3.5
Outputs Comparison
Key Takeaways
Claude Sonnet 4.6
View detailsAnthropic
Mistral Medium 3.5
View detailsMistral AI
Detailed Comparison
| Feature | | |
|---|
FAQ
Common questions about Claude Sonnet 4.6 vs Mistral Medium 3.5.