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Devstral Small 1.1 vs Kimi-k1.5

Devstral Small 1.1 and Kimi-k1.5 are closely matched at 9.6 and 17.3 on the LLM Stats Score.

Mistral AI · Moonshot AI · Updated for 2026

Which is better?

Devstral Small 1.1 and Kimi-k1.5 are closely matched on the overall LLM Stats Score at 9.6 and 17.3.

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

Choose Devstral Small 1.1

  • you want the most recent training data — it shipped Jul 2025
  • you need open weights you can self-host or fine-tune

Choose Kimi-k1.5

  • you are already invested in the Moonshot AI ecosystem

At a glance

The differences that matter most.

Devstral Small 1.1
Mistral AI
Kimi-k1.5
Moonshot AI
Core performance indexes
LLM Stats Score
9.6
#258
17.3
#205
Reasoning
9.5
#250
16.5
#203
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
— / M
Output price
$0.30 / M
— / M
Context window
128,000
—

Individual benchmarks

1 reported for Devstral Small 1.1 · 9 for Kimi-k1.5

No common benchmarks found

Devstral Small 1.1 and Kimi-k1.5don'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 Small 1.1 specifies input context (128,000 tokens). Only Devstral Small 1.1 specifies output context (128,000 tokens).

Mistral AI
Devstral Small 1.1
Input128,000 tokens
Output128,000 tokens
Moonshot AI
Kimi-k1.5
Input- tokens
Output- tokens
Fri Sep 04 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Kimi-k1.5 supports multimodal inputs, whereas Devstral Small 1.1 does not.

Kimi-k1.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Devstral Small 1.1

Text
Images
Audio
Video

Kimi-k1.5

Text
Images
Audio
Video

License

Usage and distribution terms

Devstral Small 1.1 is licensed under Apache 2.0, while Kimi-k1.5 uses a proprietary license.

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

Devstral Small 1.1

Apache 2.0

Open weights

Kimi-k1.5

Proprietary

Closed source

Release Timeline

When each model was launched

Devstral Small 1.1 was released on 2025-07-11, while Kimi-k1.5 was released on 2025-01-20.

Devstral Small 1.1 is 6 months newer than Kimi-k1.5.

Devstral Small 1.1

Jul 11, 2025

1.2 years ago

5mo newer
Kimi-k1.5

Jan 20, 2025

1.6 years ago

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 Small 1.1 and Kimi-k1.5 side-by-side, then vote on the output you prefer.

Devstral Small 1.1
✓ Preferred
Kimi-k1.5
Open in Playground

FAQ

Common questions about Devstral Small 1.1 vs Kimi-k1.5.

Which is better, Devstral Small 1.1 or Kimi-k1.5?

Devstral Small 1.1 and Kimi-k1.5 are closely matched on the LLM Stats Score at 9.6 and 17.3. Devstral Small 1.1 is made by Mistral AI and Kimi-k1.5 is made by Moonshot AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Devstral Small 1.1 compare to Kimi-k1.5 in benchmarks?

Devstral Small 1.1 scores SWE-Bench Verified: 53.6%. Kimi-k1.5 scores MATH-500: 96.2%, CLUEWSC: 91.4%, C-Eval: 88.3%, MMLU: 87.4%, IFEval: 87.2%.

What are the context window sizes for Devstral Small 1.1 and Kimi-k1.5?

Devstral Small 1.1 supports 128K tokens and Kimi-k1.5 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 Small 1.1 and Kimi-k1.5?

Key differences include LLM Stats Score (9.6 vs 17.3), multimodal support (no vs yes), licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Small 1.1 and Kimi-k1.5?

Devstral Small 1.1 is developed by Mistral AI and Kimi-k1.5 is developed by Moonshot AI.

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