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Devstral Medium vs Hy4 preview

Hy4 preview leads the LLM Stats Score 51.1 to 13.9.

Mistral AI · Tencent · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.1 to 13.9, ranking #14 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Devstral Medium

  • you want predictable pricing at $0.40/M input and $2.00/M output

Choose Hy4 preview

  • overall performance matters — it scores 51.1 and ranks #14 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Devstral Medium
Mistral AI
Hy4 preview
Tencent
Core performance indexes
LLM Stats Score
13.9
#230
51.1
#14
Reasoning
13.8
#224
50.7
#11
Coding
5.7
#189
39.8
#12
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.40 / M
— / M
Output price
$2.00 / M
— / M
Context window
128,000
—

Individual benchmarks

1 reported for Devstral Medium · 32 for Hy4 preview

No common benchmarks found

Devstral Medium and Hy4 previewdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Devstral Medium specifies input context (128,000 tokens). Only Devstral Medium specifies output context (128,000 tokens).

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
Tencent
Hy4 preview
Input- tokens
Output- tokens
Fri Sep 04 2026 • llm-stats.com

License

Usage and distribution terms

Devstral Medium is licensed under a proprietary license, while Hy4 preview uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Devstral Medium

Proprietary

Closed source

Hy4 preview

Apache 2.0

Open weights

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while Hy4 preview was released on 2026-08-28.

Hy4 preview is 14 months newer than Devstral Medium.

Devstral Medium

Jul 10, 2025

1.2 years ago

Hy4 preview

Aug 28, 2026

1 weeks ago

1.1yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Devstral Medium and Hy4 preview side-by-side, then vote on the output you prefer.

Devstral Medium
✓ Preferred
Hy4 preview
Open in Playground

FAQ

Common questions about Devstral Medium vs Hy4 preview.

Which is better, Devstral Medium or Hy4 preview?

Hy4 preview leads the LLM Stats Score 51.1 to 13.9. Devstral Medium is made by Mistral AI and Hy4 preview is made by Tencent. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Devstral Medium compare to Hy4 preview in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%.

What are the context window sizes for Devstral Medium and Hy4 preview?

Devstral Medium supports 128K tokens and Hy4 preview supports an unknown number of 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 Hy4 preview?

Key differences include LLM Stats Score (13.9 vs 51.1), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and Hy4 preview?

Devstral Medium is developed by Mistral AI and Hy4 preview is developed by Tencent.

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