Model Comparison

Claude Opus 4.5 vs Devstral MediumWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. Devstral Medium is 12.5x cheaper per token.

Verdict: Claude Opus 4.5 vs Devstral Medium — which is better?

Claude Opus 4.5 (by Anthropic) 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.

Claude Opus 4.5 outperforms in 1 benchmarks (SWE-Bench Verified), while Devstral Medium is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, Devstral Medium is roughly 12.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Nov 2025

Choose Devstral Medium if…

  • cost matters — it's about 12.5x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (SWE-Bench Verified), while Devstral Medium is better at 0 benchmarks.

Claude Opus 4.5 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, Claude Opus 4.5 ($5.00/1M tokens) is 12.5x more expensive than Devstral Medium ($0.40/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 12.5x more expensive than Devstral Medium ($2.00/1M tokens).

In conclusion, Claude Opus 4.5 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
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
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

Claude Opus 4.5 accepts 200,000 input tokens compared to Devstral Medium's 128,000 tokens. Devstral Medium can generate longer responses up to 128,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 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

Claude Opus 4.5 supports multimodal inputs, whereas Devstral Medium does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

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.

Claude Opus 4.5

Proprietary

Closed source

Devstral Medium

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Devstral Medium was released on 2025-07-10.

Claude Opus 4.5 is 5 months newer than Devstral Medium.

Claude Opus 4.5

Nov 24, 2025

6 months ago

4mo newer
Devstral Medium

Jul 10, 2025

11 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Devstral Medium's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without Devstral Medium's cutoff date.

Claude Opus 4.5

Mar 2025

Devstral Medium

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. Devstral Medium is available from Mistral AI.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

Devstral Medium

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

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher SWE-Bench Verified score (80.9% vs 61.6%)
Mistral AI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Mistral AI
Devstral Medium

FAQ

Common questions about Claude Opus 4.5 vs Devstral Medium.

Which is better, Claude Opus 4.5 or Devstral Medium?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic 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 Claude Opus 4.5 compare to Devstral Medium in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. Devstral Medium scores SWE-Bench Verified: 61.6%.

Is Claude Opus 4.5 cheaper than Devstral Medium?

Devstral Medium is 12.5x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. Devstral Medium costs $0.40/M input and $2.00/M output via mistral.

What are the context window sizes for Claude Opus 4.5 and Devstral Medium?

Claude Opus 4.5 supports 200K 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 Claude Opus 4.5 and Devstral Medium?

Key differences include context window (200K vs 128K), input pricing ($5.00 vs $0.40/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Devstral Medium?

Claude Opus 4.5 is developed by Anthropic and Devstral Medium is developed by Mistral AI.

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