Claude Sonnet 5.5 vs MiMo-V2.5-Pro
Claude Sonnet 5.5 leads the LLM Stats Score 58.0 to 25.7. MiMo-V2.5-Pro is 7.4x cheaper per token.
Anthropic · Xiaomi · Updated for 2026
Which is better?
Claude Sonnet 5.5 leads the overall LLM Stats Score 58.0 to 25.7, ranking #3 overall.
In the 2 individual benchmarks reported for both models, Claude Sonnet 5.5 wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, MiMo-V2.5-Pro is roughly 7.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
MiMo-V2.5-Pro also accepts a larger context window (1,048,576 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 58.0 and ranks #3 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Sep 2026
Choose MiMo-V2.5-Pro
- cost matters — it's about 7.4x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- 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 · 31 for MiMo-V2.5-Pro
Claude Sonnet 5.5 outperforms in 2 benchmarks (Global-MMLU, SWE-Bench Pro), while MiMo-V2.5-Pro is better at 0 benchmarks.
Claude Sonnet 5.5 significantly outperforms across most benchmarks.
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) is 4.6x more expensive than MiMo-V2.5-Pro ($0.43/1M tokens).
For output processing, Claude Sonnet 5.5 ($10.00/1M tokens) is 11.5x more expensive than MiMo-V2.5-Pro ($0.87/1M tokens).
In conclusion, Claude Sonnet 5.5 is more expensive than MiMo-V2.5-Pro.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
MiMo-V2.5-Pro accepts 1,048,576 input tokens compared to Claude Sonnet 5.5's 1,000,000 tokens. MiMo-V2.5-Pro can generate longer responses up to 131,072 tokens, while Claude Sonnet 5.5 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Claude Sonnet 5.5 supports multimodal inputs, whereas MiMo-V2.5-Pro does not.
Claude Sonnet 5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Sonnet 5.5
MiMo-V2.5-Pro
License
Usage and distribution terms
Claude Sonnet 5.5 is licensed under a proprietary license, while MiMo-V2.5-Pro uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
Claude Sonnet 5.5 was released on 2026-09-28, while MiMo-V2.5-Pro was released on 2026-04-27.
Claude Sonnet 5.5 is 5 months newer than MiMo-V2.5-Pro.
Sep 28, 2026
4 days ago
5mo newerApr 27, 2026
5 months ago
Knowledge Cutoff
When training data ends
Claude Sonnet 5.5 has a documented knowledge cutoff of 2026-06-01, while MiMo-V2.5-Pro'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 MiMo-V2.5-Pro's cutoff date.
Jun 2026
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Provider Availability
Claude Sonnet 5.5 is available from Anthropic. MiMo-V2.5-Pro is available from Xiaomi, DeepInfra, Novita.
Claude Sonnet 5.5
MiMo-V2.5-Pro
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 5.5 and MiMo-V2.5-Pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 5.5 vs MiMo-V2.5-Pro.