Model Comparison

Devstral Medium vs GPT-5.6 SolWhich is better in 2026?

Comparing Devstral Medium and GPT-5.6 Sol across benchmarks, pricing, and capabilities.

Verdict: Devstral Medium vs GPT-5.6 Sol — which is better?

Devstral Medium (by Mistral AI) and GPT-5.6 Sol (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 Medium is roughly 14.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.6 Sol also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Devstral Medium if…

  • cost matters — it's about 14.1x cheaper per token

Choose GPT-5.6 Sol 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

No common benchmarks found

Devstral Medium and GPT-5.6 Soldon'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

Devstral Medium costs less

For input processing, Devstral Medium ($0.40/1M tokens) is 12.5x cheaper than GPT-5.6 Sol ($5.00/1M tokens).

For output processing, Devstral Medium ($2.00/1M tokens) is 15.0x cheaper than GPT-5.6 Sol ($30.00/1M tokens).

In conclusion, GPT-5.6 Sol is more expensive than Devstral Medium.*

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

Lowest available price from all providers
Sun Jul 26 2026 • llm-stats.com
Mistral AI
Devstral Medium
Input tokens$0.40
Output tokens$2.00
Best providerMistral
OpenAI
GPT-5.6 Sol
Input tokens$5.00
Output tokens$30.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.6 Sol accepts 1,050,000 input tokens compared to Devstral Medium's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
OpenAI
GPT-5.6 Sol
Input1,050,000 tokens
Output128,000 tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.6 Sol supports multimodal inputs, whereas Devstral Medium does not.

GPT-5.6 Sol can handle both text and other forms of data like images, making it suitable for multimodal applications.

Devstral Medium

Text
Images
Audio
Video

GPT-5.6 Sol

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.

Devstral Medium

Proprietary

Closed source

GPT-5.6 Sol

Proprietary

Closed source

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while GPT-5.6 Sol was released on 2026-07-09.

GPT-5.6 Sol is 12 months newer than Devstral Medium.

Devstral Medium

Jul 10, 2025

1.0 years ago

GPT-5.6 Sol

Jul 9, 2026

2 weeks ago

12mo newer

Knowledge Cutoff

When training data ends

GPT-5.6 Sol has a documented knowledge cutoff of 2026-02-16, while Devstral Medium's cutoff date is not specified.

We can confirm GPT-5.6 Sol's training data extends to 2026-02-16, but cannot make a direct comparison without Devstral Medium's cutoff date.

Devstral Medium

—

GPT-5.6 Sol

Feb 2026

Provider Availability

Devstral Medium is available from Mistral AI. GPT-5.6 Sol is available from OpenAI.

Devstral Medium

mistral logo
Mistral
Input Price:Input: $0.40/1MOutput Price:Output: $2.00/1M

GPT-5.6 Sol

openai logo
OpenAI
Input Price:Input: $5.00/1MOutput Price:Output: $30.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Mistral AI
Less expensive input tokens
Less expensive output tokens
OpenAI
Larger context window (1,050,000 tokens)
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Devstral Medium and GPT-5.6 Sol side-by-side, then vote on the output you prefer.

Devstral Medium
✓ Preferred
GPT-5.6 Sol
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Devstral Medium
OpenAI
GPT-5.6 Sol

FAQ

Common questions about Devstral Medium vs GPT-5.6 Sol.

Which is better, Devstral Medium or GPT-5.6 Sol?

Devstral Medium (Mistral AI) and GPT-5.6 Sol (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Devstral Medium compare to GPT-5.6 Sol in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. GPT-5.6 Sol scores Connectors: 100.0%, Capture-the-Flag Challenges (Internal): 96.7%, HealthBench Consensus: 95.5%, GPQA: 94.6%, MRCR v2 (8-needle): 91.5%.

Is Devstral Medium cheaper than GPT-5.6 Sol?

Devstral Medium is 12.5x cheaper for input tokens. Devstral Medium costs $0.40/M input and $2.00/M output via mistral. GPT-5.6 Sol costs $5.00/M input and $30.00/M output via openai.

What are the context window sizes for Devstral Medium and GPT-5.6 Sol?

Devstral Medium supports 128K tokens and GPT-5.6 Sol supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Devstral Medium and GPT-5.6 Sol?

Key differences include context window (128K vs 1.1M), input pricing ($0.40 vs $5.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and GPT-5.6 Sol?

Devstral Medium is developed by Mistral AI and GPT-5.6 Sol is developed by OpenAI.

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