Devstral Small 1.1 vs GPT-6 Luna
GPT-6 Luna leads the LLM Stats Score 44.5 to 9.3. Devstral Small 1.1 is 1.3x cheaper per token.
Mistral AI · OpenAI · Updated for 2026
Which is better?
GPT-6 Luna leads the overall LLM Stats Score 44.5 to 9.3, ranking #41 overall.
On price, Devstral Small 1.1 is roughly 1.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6 Luna also accepts a larger context window (1,050,000 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 1.3x cheaper per token
- you need open weights you can self-host or fine-tune
Choose GPT-6 Luna
- overall performance matters — it scores 44.5 and ranks #41 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Sep 2026
At a glance
The differences that matter most.
Individual benchmarks
1 reported for Devstral Small 1.1 · 5 for GPT-6 Luna
Devstral Small 1.1 and GPT-6 Lunadon'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) costs the same as GPT-6 Luna ($0.10/1M tokens).
For output processing, Devstral Small 1.1 ($0.30/1M tokens) is 1.7x cheaper than GPT-6 Luna ($0.50/1M tokens).
In conclusion, GPT-6 Luna 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
GPT-6 Luna accepts 1,050,000 input tokens compared to Devstral Small 1.1's 128,000 tokens. Both models can generate responses up to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
GPT-6 Luna supports multimodal inputs, whereas Devstral Small 1.1 does not.
GPT-6 Luna can handle both text and other forms of data like images, making it suitable for multimodal applications.
Devstral Small 1.1
GPT-6 Luna
License
Usage and distribution terms
Devstral Small 1.1 is licensed under Apache 2.0, while GPT-6 Luna 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 GPT-6 Luna was released on 2026-09-22.
GPT-6 Luna is 15 months newer than Devstral Small 1.1.
Jul 11, 2025
1.2 years ago
Sep 22, 2026
0 days ago
1.2yr newerKnowledge Cutoff
When training data ends
GPT-6 Luna has a documented knowledge cutoff of 2026-05-18, while Devstral Small 1.1's cutoff date is not specified.
We can confirm GPT-6 Luna's training data extends to 2026-05-18, but cannot make a direct comparison without Devstral Small 1.1's cutoff date.
—
May 2026
Provider Availability
Devstral Small 1.1 is available from Mistral AI. GPT-6 Luna is available from OpenAI.
Devstral Small 1.1
GPT-6 Luna
Outputs Comparison
Judge for yourself.
Run your own prompts against Devstral Small 1.1 and GPT-6 Luna side-by-side, then vote on the output you prefer.
FAQ
Common questions about Devstral Small 1.1 vs GPT-6 Luna.