Claude Sonnet 5.5 vs Pixtral Large
Claude Sonnet 5.5 leads the LLM Stats Score 58.1 to 11.8. Pixtral Large is 1.3x cheaper per token.
Anthropic · Mistral AI · Updated for 2026
Which is better?
Claude Sonnet 5.5 leads the overall LLM Stats Score 58.1 to 11.8, ranking #3 overall.
On price, Pixtral Large is roughly 1.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Sonnet 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Sonnet 5.5
- overall performance matters — it scores 58.1 and ranks #3 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose Pixtral Large
- cost matters — it's about 1.3x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
47 reported for Claude Sonnet 5.5 · 7 for Pixtral Large
Claude Sonnet 5.5 and Pixtral Largedon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 5.5 ($2.00/1M tokens) costs the same as Pixtral Large ($2.00/1M tokens).
For output processing, Claude Sonnet 5.5 ($10.00/1M tokens) is 1.7x more expensive than Pixtral Large ($6.00/1M tokens).
In conclusion, Claude Sonnet 5.5 is more expensive than Pixtral Large.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Sonnet 5.5 accepts 1,000,000 input tokens compared to Pixtral Large's 128,000 tokens. Both models can generate responses up to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Sonnet 5.5 and Pixtral Large support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Sonnet 5.5
Pixtral Large
License
Usage and distribution terms
Claude Sonnet 5.5 is licensed under a proprietary license, while Pixtral Large uses Mistral Research License (MRL) for research; Mistral Commercial License for commercial use.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Mistral Research License (MRL) for research; Mistral Commercial License for commercial use
Open weights
Release Timeline
When each model was launched
Claude Sonnet 5.5 was released on 2026-09-28, while Pixtral Large was released on 2024-11-18.
Claude Sonnet 5.5 is 23 months newer than Pixtral Large.
Sep 28, 2026
1 days ago
1.9yr newerNov 18, 2024
1.9 years ago
Knowledge Cutoff
When training data ends
Claude Sonnet 5.5 has a documented knowledge cutoff of 2026-06-01, while Pixtral Large's cutoff date is not specified.
We can confirm Claude Sonnet 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Pixtral Large's cutoff date.
Jun 2026
—
Provider Availability
Claude Sonnet 5.5 is available from Anthropic. Pixtral Large is available from Mistral AI.
Claude Sonnet 5.5
Pixtral Large
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 5.5 and Pixtral Large side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 5.5 vs Pixtral Large.