Devstral Small 1.1 vs Grok 4 Fast
Grok 4 Fast leads the LLM Stats Score 31.7 to 9.3. Devstral Small 1.1 is 1.8x cheaper per token.
Mistral AI · xAI · Updated for 2026
Which is better?
Grok 4 Fast leads the overall LLM Stats Score 31.7 to 9.3, ranking #116 overall.
On price, Devstral Small 1.1 is roughly 1.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok 4 Fast also accepts a larger context window (2,000,000 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 Devstral Small 1.1
- cost matters — it's about 1.8x cheaper per token
- you need open weights you can self-host or fine-tune
Choose Grok 4 Fast
- overall performance matters — it scores 31.7 and ranks #116 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you process long inputs — it offers a 2,000,000 token context window
- you want the most recent training data — it shipped Aug 2025
At a glance
The differences that matter most.
Individual benchmarks
1 reported for Devstral Small 1.1 · 7 for Grok 4 Fast
Devstral Small 1.1 and Grok 4 Fastdon'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, Devstral Small 1.1 ($0.10/1M tokens) is 2.0x cheaper than Grok 4 Fast ($0.20/1M tokens).
For output processing, Devstral Small 1.1 ($0.30/1M tokens) is 1.7x cheaper than Grok 4 Fast ($0.50/1M tokens).
In conclusion, Grok 4 Fast is more expensive than Devstral Small 1.1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok 4 Fast accepts 2,000,000 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 Grok 4 Fast is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Grok 4 Fast supports multimodal inputs, whereas Devstral Small 1.1 does not.
Grok 4 Fast can handle both text and other forms of data like images, making it suitable for multimodal applications.
Devstral Small 1.1
Grok 4 Fast
License
Usage and distribution terms
Devstral Small 1.1 is licensed under Apache 2.0, while Grok 4 Fast uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Devstral Small 1.1 was released on 2025-07-11, while Grok 4 Fast was released on 2025-08-28.
Grok 4 Fast is 2 months newer than Devstral Small 1.1.
Jul 11, 2025
1.2 years ago
Aug 28, 2025
1.1 years ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Devstral Small 1.1 is available from Mistral AI. Grok 4 Fast is available from xAI.
Devstral Small 1.1
Grok 4 Fast
Outputs Comparison
Judge for yourself.
Run your own prompts against Devstral Small 1.1 and Grok 4 Fast side-by-side, then vote on the output you prefer.
FAQ
Common questions about Devstral Small 1.1 vs Grok 4 Fast.