Model Comparison

o1 vs Mistral SmallWhich is better in 2026?

Comparing o1 and Mistral Small across benchmarks, pricing, and capabilities.

Verdict: o1 vs Mistral Small — which is better?

o1 (by OpenAI) and Mistral Small (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, Mistral Small is roughly 87.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

o1 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose o1 if…

  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Dec 2024

Choose Mistral Small if…

  • cost matters — it's about 87.5x cheaper per token
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

o1 and Mistral Smalldon'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

Mistral Small costs less

For input processing, o1 ($15.00/1M tokens) is 75.0x more expensive than Mistral Small ($0.20/1M tokens).

For output processing, o1 ($60.00/1M tokens) is 100.0x more expensive than Mistral Small ($0.60/1M tokens).

In conclusion, o1 is more expensive than Mistral Small.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sat Jun 27 2026 • llm-stats.com
OpenAI
o1
Input tokens$15.00
Output tokens$60.00
Best providerAzure
Mistral AI
Mistral Small
Input tokens$0.20
Output tokens$0.60
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

o1 accepts 200,000 input tokens compared to Mistral Small's 32,768 tokens. o1 can generate longer responses up to 100,000 tokens, while Mistral Small is limited to 32,768 tokens.

OpenAI
o1
Input200,000 tokens
Output100,000 tokens
Mistral AI
Mistral Small
Input32,768 tokens
Output32,768 tokens
Sat Jun 27 2026 • llm-stats.com

License

Usage and distribution terms

o1 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.

o1

Proprietary

Closed source

Mistral Small

Mistral Research License

Open weights

Release Timeline

When each model was launched

o1 was released on 2024-12-17, while Mistral Small was released on 2024-09-17.

o1 is 3 months newer than Mistral Small.

o1

Dec 17, 2024

1.5 years ago

3mo newer
Mistral Small

Sep 17, 2024

1.8 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

o1 is available from Azure, OpenAI. Mistral Small is available from Mistral AI.

o1

azure logo
Azure
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M

Mistral Small

mistral logo
Mistral
Input Price:Input: $0.20/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (200,000 tokens)
Mistral AI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against o1 and Mistral Small side-by-side, then vote on the output you prefer.

o1
✓ Preferred
Mistral Small
Open in Playground
AI Model Comparison Table
Feature
OpenAI
o1
Mistral AI
Mistral Small

FAQ

Common questions about o1 vs Mistral Small.

Which is better, o1 or Mistral Small?

o1 (OpenAI) and Mistral Small (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does o1 compare to Mistral Small in benchmarks?

o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%.

Is o1 cheaper than Mistral Small?

Mistral Small is 75.0x cheaper for input tokens. o1 costs $15.00/M input and $60.00/M output via azure. Mistral Small costs $0.20/M input and $0.60/M output via mistral.

What are the context window sizes for o1 and Mistral Small?

o1 supports 200K tokens and Mistral Small supports 33K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between o1 and Mistral Small?

Key differences include context window (200K vs 33K), input pricing ($15.00 vs $0.20/M), licensing (Proprietary vs Mistral Research License). See the full comparison above for benchmark-by-benchmark results.

Who makes o1 and Mistral Small?

o1 is developed by OpenAI and Mistral Small is developed by Mistral AI.

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