Model Comparison
Claude 3.5 Sonnet vs Devstral Small 1.1Which is better in 2026?
Devstral Small 1.1 significantly outperforms across most benchmarks. Devstral Small 1.1 is 40.0x cheaper per token.
Verdict: Claude 3.5 Sonnet vs Devstral Small 1.1 — which is better?
Claude 3.5 Sonnet (by Anthropic) and Devstral Small 1.1 (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 3.5 Sonnet outperforms in 0 benchmarks, while Devstral Small 1.1 is better at 1 benchmark (SWE-Bench Verified). Devstral Small 1.1 significantly outperforms across most benchmarks.
On price, Devstral Small 1.1 is roughly 40.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude 3.5 Sonnet also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Claude 3.5 Sonnet if…
- you process long inputs — it offers a 200,000 token context window
Choose Devstral Small 1.1 if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- cost matters — it's about 40.0x cheaper per token
- you want the most recent training data — it shipped Jul 2025
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Claude 3.5 Sonnet outperforms in 0 benchmarks, while Devstral Small 1.1 is better at 1 benchmark (SWE-Bench Verified).
Devstral Small 1.1 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 30.0x more expensive than Devstral Small 1.1 ($0.10/1M tokens).
For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 50.0x more expensive than Devstral Small 1.1 ($0.30/1M tokens).
In conclusion, Claude 3.5 Sonnet is more expensive than Devstral Small 1.1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude 3.5 Sonnet accepts 200,000 input tokens compared to Devstral Small 1.1's 128,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while Devstral Small 1.1 is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
Claude 3.5 Sonnet supports multimodal inputs, whereas Devstral Small 1.1 does not.
Claude 3.5 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude 3.5 Sonnet
Devstral Small 1.1
License
Usage and distribution terms
Claude 3.5 Sonnet is licensed under a proprietary license, while Devstral Small 1.1 uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Claude 3.5 Sonnet was released on 2024-10-22, while Devstral Small 1.1 was released on 2025-07-11.
Devstral Small 1.1 is 9 months newer than Claude 3.5 Sonnet.
Oct 22, 2024
1.7 years ago
Jul 11, 2025
1.0 years ago
8mo 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 3.5 Sonnet is available from Anthropic, Bedrock, Google. Devstral Small 1.1 is available from Mistral AI.
Claude 3.5 Sonnet
Devstral Small 1.1
Outputs Comparison
Key Takeaways
Claude 3.5 Sonnet
View detailsAnthropic
Devstral Small 1.1
View detailsMistral AI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Claude 3.5 Sonnet and Devstral Small 1.1 side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Claude 3.5 Sonnet vs Devstral Small 1.1.