Model Comparison

Gemini 3.1 Pro vs Devstral MediumWhich is better in 2026?

Gemini 3.1 Pro significantly outperforms across most benchmarks. Devstral Medium is 7.0x cheaper per token.

Verdict: Gemini 3.1 Pro vs Devstral Medium — which is better?

Gemini 3.1 Pro (by Google) and Devstral Medium (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.

Gemini 3.1 Pro outperforms in 1 benchmarks (SWE-Bench Verified), while Devstral Medium is better at 0 benchmarks. Gemini 3.1 Pro significantly outperforms across most benchmarks.

On price, Devstral Medium is roughly 7.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.1 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3.1 Pro if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Feb 2026

Choose Devstral Medium if…

  • cost matters — it's about 7.0x cheaper per token
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Gemini 3.1 Pro outperforms in 1 benchmarks (SWE-Bench Verified), while Devstral Medium is better at 0 benchmarks.

Gemini 3.1 Pro significantly outperforms across most benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Devstral Medium costs less

For input processing, Gemini 3.1 Pro ($2.50/1M tokens) is 6.3x more expensive than Devstral Medium ($0.40/1M tokens).

For output processing, Gemini 3.1 Pro ($15.00/1M tokens) is 7.5x more expensive than Devstral Medium ($2.00/1M tokens).

In conclusion, Gemini 3.1 Pro is more expensive than Devstral Medium.*

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

Lowest available price from all providers
Sat Jun 13 2026 • llm-stats.com
Google
Gemini 3.1 Pro
Input tokens$2.50
Output tokens$15.00
Best providerGoogle
Mistral AI
Devstral Medium
Input tokens$0.40
Output tokens$2.00
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.1 Pro accepts 1,048,576 input tokens compared to Devstral Medium's 128,000 tokens. Devstral Medium can generate longer responses up to 128,000 tokens, while Gemini 3.1 Pro is limited to 65,536 tokens.

Google
Gemini 3.1 Pro
Input1,048,576 tokens
Output65,536 tokens
Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 3.1 Pro supports multimodal inputs, whereas Devstral Medium does not.

Gemini 3.1 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3.1 Pro

Text
Images
Audio
Video

Devstral Medium

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3.1 Pro

Proprietary

Closed source

Devstral Medium

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.1 Pro was released on 2026-02-19, while Devstral Medium was released on 2025-07-10.

Gemini 3.1 Pro is 7 months newer than Devstral Medium.

Gemini 3.1 Pro

Feb 19, 2026

3 months ago

7mo newer
Devstral Medium

Jul 10, 2025

11 months ago

Knowledge Cutoff

When training data ends

Gemini 3.1 Pro has a documented knowledge cutoff of 2025-01-31, while Devstral Medium's cutoff date is not specified.

We can confirm Gemini 3.1 Pro's training data extends to 2025-01-31, but cannot make a direct comparison without Devstral Medium's cutoff date.

Gemini 3.1 Pro

Jan 2025

Devstral Medium

—

Provider Availability

Gemini 3.1 Pro is available from Google. Devstral Medium is available from Mistral AI.

Gemini 3.1 Pro

google logo
Google
Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M

Devstral Medium

mistral logo
Mistral
Input Price:Input: $0.40/1MOutput Price:Output: $2.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (1,048,576 tokens)
Supports multimodal inputs
Higher SWE-Bench Verified score (80.6% vs 61.6%)
Mistral AI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3.1 Pro
Mistral AI
Devstral Medium

FAQ

Common questions about Gemini 3.1 Pro vs Devstral Medium.

Which is better, Gemini 3.1 Pro or Devstral Medium?

Gemini 3.1 Pro significantly outperforms across most benchmarks. Gemini 3.1 Pro is made by Google and Devstral Medium is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3.1 Pro compare to Devstral Medium in benchmarks?

Gemini 3.1 Pro scores t2-bench: 99.3%, LiveCodeBench Pro: 96.2%, GPQA: 94.3%, MMMLU: 92.6%, BrowseComp: 85.9%. Devstral Medium scores SWE-Bench Verified: 61.6%.

Is Gemini 3.1 Pro cheaper than Devstral Medium?

Devstral Medium is 6.3x cheaper for input tokens. Gemini 3.1 Pro costs $2.50/M input and $15.00/M output via google. Devstral Medium costs $0.40/M input and $2.00/M output via mistral.

What are the context window sizes for Gemini 3.1 Pro and Devstral Medium?

Gemini 3.1 Pro supports 1.0M tokens and Devstral Medium supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.1 Pro and Devstral Medium?

Key differences include context window (1.0M vs 128K), input pricing ($2.50 vs $0.40/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.1 Pro and Devstral Medium?

Gemini 3.1 Pro is developed by Google and Devstral Medium is developed by Mistral AI.

Related comparisons