GPT-6 Astra vs Mistral Small
Comparing GPT-6 Astra and Mistral Small across benchmarks, pricing, and capabilities.
OpenAI · Mistral AI · Updated for 2026
Which is better?
GPT-6 Astra and Mistral Small trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Mistral Small is roughly 66.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6 Astra 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 GPT-6 Astra
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose Mistral Small
- cost matters — it's about 66.7x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
22 reported for GPT-6 Astra · 0 for Mistral Small
GPT-6 Astra and Mistral Smalldon'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, GPT-6 Astra ($10.00/1M tokens) is 50.0x more expensive than Mistral Small ($0.20/1M tokens).
For output processing, GPT-6 Astra ($50.00/1M tokens) is 83.3x more expensive than Mistral Small ($0.60/1M tokens).
In conclusion, GPT-6 Astra is more expensive than Mistral Small.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6 Astra accepts 1,050,000 input tokens compared to Mistral Small's 32,768 tokens. GPT-6 Astra can generate longer responses up to 128,000 tokens, while Mistral Small is limited to 32,768 tokens.
Input capabilities
Documented input modalities across available providers
GPT-6 Astra supports multimodal inputs, whereas Mistral Small does not.
GPT-6 Astra can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-6 Astra
Mistral Small
License
Usage and distribution terms
GPT-6 Astra is licensed under a proprietary license, while Mistral Small 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
GPT-6 Astra was released on 2026-09-03, while Mistral Small was released on 2024-09-17.
GPT-6 Astra is 24 months newer than Mistral Small.
Sep 3, 2026
0 days ago
2.0yr newerSep 17, 2024
2.0 years ago
Knowledge Cutoff
When training data ends
GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while Mistral Small's cutoff date is not specified.
We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without Mistral Small's cutoff date.
Apr 2026
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Provider Availability
GPT-6 Astra is available from OpenAI. Mistral Small is available from Mistral AI.
GPT-6 Astra
Mistral Small
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6 Astra and Mistral Small side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6 Astra vs Mistral Small.