Model Comparison
Grok-4 Fast Reasoning vs Mistral Large 2Which is better in 2026?
Comparing Grok-4 Fast Reasoning and Mistral Large 2 across benchmarks, pricing, and capabilities.
Verdict: Grok-4 Fast Reasoning vs Mistral Large 2 — which is better?
Grok-4 Fast Reasoning (by xAI) and Mistral Large 2 (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, Grok-4 Fast Reasoning is roughly 10.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4 Fast Reasoning also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Grok-4 Fast Reasoning if…
- cost matters — it's about 10.9x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
- you want the most recent training data — it shipped Aug 2025
Choose Mistral Large 2 if…
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Grok-4 Fast Reasoning and Mistral Large 2don'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
For input processing, Grok-4 Fast Reasoning ($0.20/1M tokens) is 10.0x cheaper than Mistral Large 2 ($2.00/1M tokens).
For output processing, Grok-4 Fast Reasoning ($0.50/1M tokens) is 12.0x cheaper than Mistral Large 2 ($6.00/1M tokens).
In conclusion, Mistral Large 2 is more expensive than Grok-4 Fast Reasoning.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 Fast Reasoning accepts 2,000,000 input tokens compared to Mistral Large 2's 128,000 tokens. Mistral Large 2 can generate longer responses up to 128,000 tokens, while Grok-4 Fast Reasoning is limited to 30,000 tokens.
Input Capabilities
Supported data types and modalities
Grok-4 Fast Reasoning supports multimodal inputs, whereas Mistral Large 2 does not.
Grok-4 Fast Reasoning can handle both text and other forms of data like images, making it suitable for multimodal applications.
Grok-4 Fast Reasoning
Mistral Large 2
License
Usage and distribution terms
Grok-4 Fast Reasoning is licensed under a proprietary license, while Mistral Large 2 uses Mistral Research License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Mistral Research License
Open weights
Release Timeline
When each model was launched
Grok-4 Fast Reasoning was released on 2025-08-28, while Mistral Large 2 was released on 2024-07-24.
Grok-4 Fast Reasoning is 13 months newer than Mistral Large 2.
Aug 28, 2025
10 months ago
1.1yr newerJul 24, 2024
1.9 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Grok-4 Fast Reasoning is available from xAI. Mistral Large 2 is available from Google, Mistral AI.
Grok-4 Fast Reasoning
Mistral Large 2
Outputs Comparison
Key Takeaways
Mistral Large 2
View detailsMistral AI
Detailed Comparison
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FAQ
Common questions about Grok-4 Fast Reasoning vs Mistral Large 2.