Model Comparison

Devstral Medium vs Grok 4.5Which is better in 2026?

Comparing Devstral Medium and Grok 4.5 across benchmarks, pricing, and capabilities.

Verdict: Devstral Medium vs Grok 4.5 — which is better?

Devstral Medium (by Mistral AI) and Grok 4.5 (by xAI) 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 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok 4.5 also accepts a larger context window (500,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Devstral Medium if…

  • cost matters — it's about 3.8x cheaper per token

Choose Grok 4.5 if…

  • you process long inputs — it offers a 500,000 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 Grok 4.5don'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 5.0x cheaper than Grok 4.5 ($2.00/1M tokens).

For output processing, Devstral Medium ($2.00/1M tokens) is 3.0x cheaper than Grok 4.5 ($6.00/1M tokens).

In conclusion, Grok 4.5 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
xAI
Grok 4.5
Input tokens$2.00
Output tokens$6.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok 4.5 accepts 500,000 input tokens compared to Devstral Medium's 128,000 tokens. Only Devstral Medium specifies output context (128,000 tokens).

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
xAI
Grok 4.5
Input500,000 tokens
Output- tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok 4.5 supports multimodal inputs, whereas Devstral Medium does not.

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

Devstral Medium

Text
Images
Audio
Video

Grok 4.5

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

Grok 4.5

Proprietary

Closed source

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while Grok 4.5 was released on 2026-07-16.

Grok 4.5 is 12 months newer than Devstral Medium.

Devstral Medium

Jul 10, 2025

1.0 years ago

Grok 4.5

Jul 16, 2026

1 weeks ago

1.0yr newer

Knowledge Cutoff

When training data ends

Grok 4.5 has a documented knowledge cutoff of 2026-02-01, while Devstral Medium's cutoff date is not specified.

We can confirm Grok 4.5's training data extends to 2026-02-01, but cannot make a direct comparison without Devstral Medium's cutoff date.

Devstral Medium

—

Grok 4.5

Feb 2026

Provider Availability

Devstral Medium is available from Mistral AI. Grok 4.5 is available from xAI.

Devstral Medium

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

Grok 4.5

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $6.00/1M
* 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
xAI
Larger context window (500,000 tokens)
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Devstral Medium and Grok 4.5 side-by-side, then vote on the output you prefer.

Devstral Medium
✓ Preferred
Grok 4.5
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Devstral Medium
xAI
Grok 4.5

FAQ

Common questions about Devstral Medium vs Grok 4.5.

Which is better, Devstral Medium or Grok 4.5?

Devstral Medium (Mistral AI) and Grok 4.5 (xAI) 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 Grok 4.5 in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. Grok 4.5 scores GPQA: 93.0%, Terminal-Bench 2.1: 83.3%, Artificial Analysis Coding Agent Index v1.1: 76.0%, SWE-Bench Pro: 64.7%, AA-Omniscience Index: 63.0%.

Is Devstral Medium cheaper than Grok 4.5?

Devstral Medium is 5.0x cheaper for input tokens. Devstral Medium costs $0.40/M input and $2.00/M output via mistral. Grok 4.5 costs $2.00/M input and $6.00/M output via xai.

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

Devstral Medium supports 128K tokens and Grok 4.5 supports 500K 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 Grok 4.5?

Key differences include context window (128K vs 500K), input pricing ($0.40 vs $2.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and Grok 4.5?

Devstral Medium is developed by Mistral AI and Grok 4.5 is developed by xAI.

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