Model Comparison
Devstral Small 1.1 vs GPT-5.6 TerraWhich is better in 2026?
Comparing Devstral Small 1.1 and GPT-5.6 Terra across benchmarks, pricing, and capabilities.
Verdict: Devstral Small 1.1 vs GPT-5.6 Terra — which is better?
Devstral Small 1.1 (by Mistral AI) and GPT-5.6 Terra (by OpenAI) 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, Devstral Small 1.1 is roughly 37.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.6 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Devstral Small 1.1 if…
- cost matters — it's about 37.5x cheaper per token
- you need open weights you can self-host or fine-tune
Choose GPT-5.6 Terra if…
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Jul 2026
Performance Benchmarks
Comparative analysis across standard metrics
Devstral Small 1.1 and GPT-5.6 Terradon'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, Devstral Small 1.1 ($0.10/1M tokens) is 25.0x cheaper than GPT-5.6 Terra ($2.50/1M tokens).
For output processing, Devstral Small 1.1 ($0.30/1M tokens) is 50.0x cheaper than GPT-5.6 Terra ($15.00/1M tokens).
In conclusion, GPT-5.6 Terra 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-5.6 Terra 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
Supported data types and modalities
GPT-5.6 Terra supports multimodal inputs, whereas Devstral Small 1.1 does not.
GPT-5.6 Terra can handle both text and other forms of data like images, making it suitable for multimodal applications.
Devstral Small 1.1
GPT-5.6 Terra
License
Usage and distribution terms
Devstral Small 1.1 is licensed under Apache 2.0, while GPT-5.6 Terra 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-5.6 Terra was released on 2026-07-09.
GPT-5.6 Terra is 12 months newer than Devstral Small 1.1.
Jul 11, 2025
1.0 years ago
Jul 9, 2026
2 weeks ago
12mo newerKnowledge Cutoff
When training data ends
GPT-5.6 Terra has a documented knowledge cutoff of 2026-02-16, while Devstral Small 1.1's cutoff date is not specified.
We can confirm GPT-5.6 Terra's training data extends to 2026-02-16, but cannot make a direct comparison without Devstral Small 1.1's cutoff date.
—
Feb 2026
Provider Availability
Devstral Small 1.1 is available from Mistral AI. GPT-5.6 Terra is available from OpenAI.
Devstral Small 1.1
GPT-5.6 Terra
Outputs Comparison
Key Takeaways
Devstral Small 1.1
View detailsMistral AI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Devstral Small 1.1 and GPT-5.6 Terra side-by-side, then vote on the output you prefer.
| Feature | | |
|---|
FAQ
Common questions about Devstral Small 1.1 vs GPT-5.6 Terra.