Model Comparison

Claude 3 Sonnet vs Kimi-k1.5

Kimi-k1.5 significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude 3 Sonnet outperforms in 0 benchmarks, while Kimi-k1.5 is better at 1 benchmark (MMLU).

Kimi-k1.5 significantly outperforms across most benchmarks.

Tue Mar 31 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Cost data unavailable.

Lowest available price from all providers
Tue Mar 31 2026 • llm-stats.com
Anthropic
Claude 3 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Moonshot AI
Kimi-k1.5
Input tokens$0.00
Output tokens$0.00
Best providerUnknown Organization
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Context Window

Maximum input and output token capacity

Only Claude 3 Sonnet specifies input context (200,000 tokens). Only Claude 3 Sonnet specifies output context (200,000 tokens).

Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
Moonshot AI
Kimi-k1.5
Input- tokens
Output- tokens
Tue Mar 31 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Sonnet and Kimi-k1.5 support multimodal inputs.

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

Claude 3 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 Sonnet

Proprietary

Closed source

Kimi-k1.5

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Sonnet was released on 2024-02-29, while Kimi-k1.5 was released on 2025-01-20.

Kimi-k1.5 is 11 months newer than Claude 3 Sonnet.

Claude 3 Sonnet

Feb 29, 2024

2.1 years ago

Kimi-k1.5

Jan 20, 2025

1.2 years ago

10mo 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

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Moonshot AI
Higher MMLU score (87.4% vs 79.0%)

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Sonnet
Moonshot AI
Kimi-k1.5

FAQ

Common questions about Claude 3 Sonnet vs Kimi-k1.5

Kimi-k1.5 significantly outperforms across most benchmarks. Claude 3 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.
Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%. Kimi-k1.5 scores MATH-500: 96.2%, CLUEWSC: 91.4%, C-Eval: 88.3%, MMLU: 87.4%, IFEval: 87.2%.
Claude 3 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.
Claude 3 Sonnet is developed by Anthropic and Kimi-k1.5 is developed by Moonshot AI.