Claude Opus 5.5 vs Mistral NeMo Instruct
Claude Opus 5.5 leads the LLM Stats Score 59.7 to -4.8. Mistral NeMo Instruct is 367.8x cheaper per token.
Anthropic · Mistral AI · Updated for 2026
Which is better?
Claude Opus 5.5 leads the overall LLM Stats Score 59.7 to -4.8, ranking #1 overall.
On price, Mistral NeMo Instruct is roughly 367.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Opus 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 Opus 5.5
- overall performance matters — it scores 59.7 and ranks #1 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 Mistral NeMo Instruct
- cost matters — it's about 367.8x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
31 reported for Claude Opus 5.5 · 8 for Mistral NeMo Instruct
Claude Opus 5.5 and Mistral NeMo Instructdon'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 Opus 5.5 ($4.00/1M tokens) is 210.5x more expensive than Mistral NeMo Instruct ($0.02/1M tokens).
For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 666.7x more expensive than Mistral NeMo Instruct ($0.03/1M tokens).
In conclusion, Claude Opus 5.5 is more expensive than Mistral NeMo Instruct.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Opus 5.5 accepts 1,000,000 input tokens compared to Mistral NeMo Instruct's 131,072 tokens. Mistral NeMo Instruct can generate longer responses up to 131,072 tokens, while Claude Opus 5.5 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Claude Opus 5.5 supports multimodal inputs, whereas Mistral NeMo Instruct does not.
Claude Opus 5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Opus 5.5
Mistral NeMo Instruct
License
Usage and distribution terms
Claude Opus 5.5 is licensed under a proprietary license, while Mistral NeMo Instruct 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 Opus 5.5 was released on 2026-09-22, while Mistral NeMo Instruct was released on 2024-07-18.
Claude Opus 5.5 is 27 months newer than Mistral NeMo Instruct.
Sep 22, 2026
0 days ago
2.2yr newerJul 18, 2024
2.2 years ago
Knowledge Cutoff
When training data ends
Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while Mistral NeMo Instruct's cutoff date is not specified.
We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Mistral NeMo Instruct's cutoff date.
Jun 2026
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Provider Availability
Claude Opus 5.5 is available from Anthropic. Mistral NeMo Instruct is available from DeepInfra, Google, Mistral AI.
Claude Opus 5.5
Mistral NeMo Instruct
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Opus 5.5 and Mistral NeMo Instruct side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Opus 5.5 vs Mistral NeMo Instruct.