Model Comparison

Devstral Medium vs GPT-4o miniWhich is better in 2026?

Devstral Medium significantly outperforms across most benchmarks. GPT-4o mini is 3.0x cheaper per token.

Verdict: Devstral Medium vs GPT-4o mini — which is better?

Devstral Medium (by Mistral AI) and GPT-4o mini (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.

Devstral Medium outperforms in 1 benchmarks (SWE-Bench Verified), while GPT-4o mini is better at 0 benchmarks. Devstral Medium significantly outperforms across most benchmarks.

On price, GPT-4o mini is roughly 3.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose Devstral Medium if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Jul 2025

Choose GPT-4o mini if…

  • cost matters — it's about 3.0x cheaper per token

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Devstral Medium outperforms in 1 benchmarks (SWE-Bench Verified), while GPT-4o mini is better at 0 benchmarks.

Devstral Medium significantly outperforms across most benchmarks.

Sat Jul 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o mini costs less

For input processing, Devstral Medium ($0.40/1M tokens) is 2.7x more expensive than GPT-4o mini ($0.15/1M tokens).

For output processing, Devstral Medium ($2.00/1M tokens) is 3.3x more expensive than GPT-4o mini ($0.60/1M tokens).

In conclusion, Devstral Medium is more expensive than GPT-4o mini.*

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

Lowest available price from all providers
Sat Jul 18 2026 • llm-stats.com
Mistral AI
Devstral Medium
Input tokens$0.40
Output tokens$2.00
Best providerMistral
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 128,000 tokens. Devstral Medium can generate longer responses up to 128,000 tokens, while GPT-4o mini is limited to 16,384 tokens.

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
Sat Jul 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o mini supports multimodal inputs, whereas Devstral Medium does not.

GPT-4o mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

Devstral Medium

Text
Images
Audio
Video

GPT-4o mini

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-4o mini

Proprietary

Closed source

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while GPT-4o mini was released on 2024-07-18.

Devstral Medium is 12 months newer than GPT-4o mini.

Devstral Medium

Jul 10, 2025

1.0 years ago

11mo newer
GPT-4o mini

Jul 18, 2024

2.0 years ago

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Devstral Medium's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without Devstral Medium's cutoff date.

Devstral Medium

—

GPT-4o mini

Oct 2023

Provider Availability

Devstral Medium is available from Mistral AI. GPT-4o mini is available from Azure.

Devstral Medium

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

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Mistral AI
Higher SWE-Bench Verified score (61.6% vs 8.7%)
OpenAI
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Devstral Medium and GPT-4o mini side-by-side, then vote on the output you prefer.

Devstral Medium
✓ Preferred
GPT-4o mini
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Devstral Medium
OpenAI
GPT-4o mini

FAQ

Common questions about Devstral Medium vs GPT-4o mini.

Which is better, Devstral Medium or GPT-4o mini?

Devstral Medium significantly outperforms across most benchmarks. Devstral Medium is made by Mistral AI and GPT-4o mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Devstral Medium compare to GPT-4o mini in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%.

Is Devstral Medium cheaper than GPT-4o mini?

GPT-4o mini is 2.7x cheaper for input tokens. Devstral Medium costs $0.40/M input and $2.00/M output via mistral. GPT-4o mini costs $0.15/M input and $0.60/M output via azure.

What are the context window sizes for Devstral Medium and GPT-4o mini?

Devstral Medium supports 128K tokens and GPT-4o mini 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 Devstral Medium and GPT-4o mini?

Key differences include input pricing ($0.40 vs $0.15/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and GPT-4o mini?

Devstral Medium is developed by Mistral AI and GPT-4o mini is developed by OpenAI.

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