Model Comparison

Claude Sonnet 4.5 vs Devstral Small 1.1Which is better in 2026?

Comparing Claude Sonnet 4.5 and Devstral Small 1.1 across benchmarks, pricing, and capabilities.

Verdict: Claude Sonnet 4.5 vs Devstral Small 1.1 — which is better?

Claude Sonnet 4.5 (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.

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 Sonnet 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Sonnet 4.5 if…

  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Sep 2025

Choose Devstral Small 1.1 if…

  • cost matters — it's about 40.0x cheaper per token
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Sonnet 4.5 and Devstral Small 1.1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Devstral Small 1.1 costs less

For input processing, Claude Sonnet 4.5 ($3.00/1M tokens) is 30.0x more expensive than Devstral Small 1.1 ($0.10/1M tokens).

For output processing, Claude Sonnet 4.5 ($15.00/1M tokens) is 50.0x more expensive than Devstral Small 1.1 ($0.30/1M tokens).

In conclusion, Claude Sonnet 4.5 is more expensive than Devstral Small 1.1.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sat Jun 27 2026 • llm-stats.com
Anthropic
Claude Sonnet 4.5
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Mistral AI
Devstral Small 1.1
Input tokens$0.10
Output tokens$0.30
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Sonnet 4.5 accepts 200,000 input tokens compared to Devstral Small 1.1's 128,000 tokens. Devstral Small 1.1 can generate longer responses up to 128,000 tokens, while Claude Sonnet 4.5 is limited to 64,000 tokens.

Anthropic
Claude Sonnet 4.5
Input200,000 tokens
Output64,000 tokens
Mistral AI
Devstral Small 1.1
Input128,000 tokens
Output128,000 tokens
Sat Jun 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.5 supports multimodal inputs, whereas Devstral Small 1.1 does not.

Claude Sonnet 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.5

Text
Images
Audio
Video

Devstral Small 1.1

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 4.5 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.

Claude Sonnet 4.5

Proprietary

Closed source

Devstral Small 1.1

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.5 was released on 2025-09-29, while Devstral Small 1.1 was released on 2025-07-11.

Claude Sonnet 4.5 is 3 months newer than Devstral Small 1.1.

Claude Sonnet 4.5

Sep 29, 2025

9 months ago

2mo newer
Devstral Small 1.1

Jul 11, 2025

11 months ago

Knowledge Cutoff

When training data ends

Claude Sonnet 4.5 has a documented knowledge cutoff of 2025-01-31, while Devstral Small 1.1's cutoff date is not specified.

We can confirm Claude Sonnet 4.5's training data extends to 2025-01-31, but cannot make a direct comparison without Devstral Small 1.1's cutoff date.

Claude Sonnet 4.5

Jan 2025

Devstral Small 1.1

—

Provider Availability

Claude Sonnet 4.5 is available from Anthropic. Devstral Small 1.1 is available from Mistral AI.

Claude Sonnet 4.5

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Devstral Small 1.1

mistral logo
Mistral
Input Price:Input: $0.10/1MOutput Price:Output: $0.30/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Mistral AI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Sonnet 4.5 and Devstral Small 1.1 side-by-side, then vote on the output you prefer.

Claude Sonnet 4.5
✓ Preferred
Devstral Small 1.1
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Sonnet 4.5
Mistral AI
Devstral Small 1.1

FAQ

Common questions about Claude Sonnet 4.5 vs Devstral Small 1.1.

Which is better, Claude Sonnet 4.5 or Devstral Small 1.1?

Claude Sonnet 4.5 (Anthropic) and Devstral Small 1.1 (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Sonnet 4.5 compare to Devstral Small 1.1 in benchmarks?

Claude Sonnet 4.5 scores MMMLU: 89.1%, AIME 2025: 87.0%, TAU-bench Retail: 86.2%, GPQA: 83.4%, MMMUval: 77.8%. Devstral Small 1.1 scores SWE-Bench Verified: 53.6%.

Is Claude Sonnet 4.5 cheaper than Devstral Small 1.1?

Devstral Small 1.1 is 30.0x cheaper for input tokens. Claude Sonnet 4.5 costs $3.00/M input and $15.00/M output via anthropic. Devstral Small 1.1 costs $0.10/M input and $0.30/M output via mistral.

What are the context window sizes for Claude Sonnet 4.5 and Devstral Small 1.1?

Claude Sonnet 4.5 supports 200K tokens and Devstral Small 1.1 supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 4.5 and Devstral Small 1.1?

Key differences include context window (200K vs 128K), input pricing ($3.00 vs $0.10/M), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 4.5 and Devstral Small 1.1?

Claude Sonnet 4.5 is developed by Anthropic and Devstral Small 1.1 is developed by Mistral AI.

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