Model Comparison

Claude Sonnet 4.6 vs Kimi K2 0905

Claude Sonnet 4.6 significantly outperforms across most benchmarks. Kimi K2 0905 is 5.6x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Sonnet 4.6 outperforms in 1 benchmarks (GPQA), while Kimi K2 0905 is better at 0 benchmarks.

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Wed Jun 03 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Kimi K2 0905 costs less

For input processing, Claude Sonnet 4.6 ($3.00/1M tokens) is 5.0x more expensive than Kimi K2 0905 ($0.60/1M tokens).

For output processing, Claude Sonnet 4.6 ($15.00/1M tokens) is 6.0x more expensive than Kimi K2 0905 ($2.50/1M tokens).

In conclusion, Claude Sonnet 4.6 is more expensive than Kimi K2 0905.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Wed Jun 03 2026 • llm-stats.com

Claude Sonnet 4.6

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

Kimi K2 0905

Input tokens$0.60

Output tokens$2.50

Best providerNovita

Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Kimi K2 0905 accepts 262,144 input tokens compared to Claude Sonnet 4.6's 200,000 tokens. Kimi K2 0905 can generate longer responses up to 262,144 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Claude Sonnet 4.6

Input200,000 tokens

Output64,000 tokens

Kimi K2 0905

Input262,144 tokens

Output262,144 tokens

Wed Jun 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.6 supports multimodal inputs, whereas Kimi K2 0905 does not.

Claude Sonnet 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.6

Text

Images

Audio

Video

Kimi K2 0905

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 Sonnet 4.6

Proprietary

Closed source

Kimi K2 0905

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Sonnet 4.6 was released on 2026-02-17, while Kimi K2 0905 was released on 2025-09-05.

Claude Sonnet 4.6 is 6 months newer than Kimi K2 0905.

Claude Sonnet 4.6

Feb 17, 2026

3 months ago

5mo newer

Kimi K2 0905

Sep 5, 2025

9 months 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

Provider Availability

Claude Sonnet 4.6 is available from Anthropic. Kimi K2 0905 is available from Novita.

Claude Sonnet 4.6

Anthropic

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Kimi K2 0905

Novita

Input Price:Input: $0.60/1MOutput Price:Output: $2.50/1M

* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Claude Sonnet 4.6

View details

Anthropic

Supports multimodal inputs

Higher GPQA score (89.9% vs 75.8%)

Kimi K2 0905

View details

Moonshot AI

Larger context window (262,144 tokens)

Less expensive input tokens

Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature	Claude Sonnet 4.6	Kimi K2 0905

FAQ

Common questions about Claude Sonnet 4.6 vs Kimi K2 0905.

Which is better, Claude Sonnet 4.6 or Kimi K2 0905?

Claude Sonnet 4.6 significantly outperforms across most benchmarks. Claude Sonnet 4.6 is made by Anthropic and Kimi K2 0905 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Sonnet 4.6 compare to Kimi K2 0905 in benchmarks?

Claude Sonnet 4.6 scores Tau2 Telecom: 97.9%, Tau2 Retail: 91.7%, GPQA: 89.9%, MMMLU: 89.3%, SWE-Bench Verified: 79.6%. Kimi K2 0905 scores HumanEval: 94.5%, MMLU: 90.2%, MATH: 89.1%, MMLU-Pro: 82.5%, GPQA: 75.8%.

Is Claude Sonnet 4.6 cheaper than Kimi K2 0905?

Kimi K2 0905 is 5.0x cheaper for input tokens. Claude Sonnet 4.6 costs $3.00/M input and $15.00/M output via anthropic. Kimi K2 0905 costs $0.60/M input and $2.50/M output via novita.

What are the context window sizes for Claude Sonnet 4.6 and Kimi K2 0905?

Claude Sonnet 4.6 supports 200K tokens and Kimi K2 0905 supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 4.6 and Kimi K2 0905?

Key differences include context window (200K vs 262K), input pricing ($3.00 vs $0.60/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 4.6 and Kimi K2 0905?

Claude Sonnet 4.6 is developed by Anthropic and Kimi K2 0905 is developed by Moonshot AI.