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Claude 3.7 Sonnet vs Kimi-k1.5

Claude 3.7 Sonnet shows notably better performance in the majority of benchmarks.

Anthropic · Moonshot AI · Updated for 2026

Which is better?

Claude 3.7 Sonnet outperforms in 3 benchmarks (AIME 2024, IFEval, MMMU), while Kimi-k1.5 is better at 0 benchmarks. Claude 3.7 Sonnet shows notably better performance in the majority of benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Claude 3.7 Sonnet

  • you want the strongest raw capability — it leads on 3 of 4 shared benchmarks
  • you want the most recent training data — it shipped Feb 2025

Choose Kimi-k1.5

  • you are already invested in the Moonshot AI ecosystem

At a glance

The differences that matter most.

Claude 3.7 Sonnet
Anthropic
Kimi-k1.5
Moonshot AI
Benchmark wins
3 of 4
1 of 4
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
200,000
—
Released
Feb 2025
Jan 2025
License
Proprietary
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude 3.7 Sonnet outperforms in 3 benchmarks (AIME 2024, IFEval, MMMU), while Kimi-k1.5 is better at 0 benchmarks.

Claude 3.7 Sonnet shows notably better performance in the majority of benchmarks.

Thu Aug 27 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Claude 3.7 Sonnet specifies input context (200,000 tokens). Only Claude 3.7 Sonnet specifies output context (128,000 tokens).

Anthropic
Claude 3.7 Sonnet
Input200,000 tokens
Output128,000 tokens
Moonshot AI
Kimi-k1.5
Input- tokens
Output- tokens
Thu Aug 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and Kimi-k1.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.7 Sonnet

Text
Images
Audio
Video

Kimi-k1.5

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.

Claude 3.7 Sonnet

Proprietary

Closed source

Kimi-k1.5

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Kimi-k1.5 was released on 2025-01-20.

Claude 3.7 Sonnet is 1 month newer than Kimi-k1.5.

Claude 3.7 Sonnet

Feb 24, 2025

1.5 years ago

1mo 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 Claude 3.7 Sonnet and Kimi-k1.5 side-by-side, then vote on the output you prefer.

Claude 3.7 Sonnet
✓ Preferred
Kimi-k1.5
Open in Playground

FAQ

Common questions about Claude 3.7 Sonnet vs Kimi-k1.5.

Which is better, Claude 3.7 Sonnet or Kimi-k1.5?

Claude 3.7 Sonnet shows notably better performance in the majority of benchmarks. Claude 3.7 Sonnet is made by Anthropic and Kimi-k1.5 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3.7 Sonnet compare to Kimi-k1.5 in benchmarks?

Claude 3.7 Sonnet scores MATH-500: 96.2%, IFEval: 93.2%, MMMLU: 86.1%, GPQA: 84.8%, TAU-bench Retail: 81.2%. 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 Claude 3.7 Sonnet and Kimi-k1.5?

Claude 3.7 Sonnet supports 200K 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.

Who makes Claude 3.7 Sonnet and Kimi-k1.5?

Claude 3.7 Sonnet is developed by Anthropic and Kimi-k1.5 is developed by Moonshot AI.

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