Claude Opus 4.6 vs Kimi K2 Instruct Comparison

Comparing Claude Opus 4.6 and Kimi K2 Instruct across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Claude Opus 4.6 outperforms in 6 benchmarks (AIME 2025, GPQA, Humanity's Last Exam, SWE-bench Multilingual, Tau2 Retail, Tau2 Telecom), while Kimi K2 Instruct is better at 0 benchmarks.

Claude Opus 4.6 significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Kimi K2 Instruct costs less

For input processing, Claude Opus 4.6 ($5.00/1M tokens) is 10.0x more expensive than Kimi K2 Instruct ($0.50/1M tokens).

For output processing, Claude Opus 4.6 ($25.00/1M tokens) is 50.0x more expensive than Kimi K2 Instruct ($0.50/1M tokens).

In conclusion, Claude Opus 4.6 is more expensive than Kimi K2 Instruct.*

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

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude Opus 4.6

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

Kimi K2 Instruct

Input tokens$0.50

Output tokens$0.50

Best providerFireworks

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. Kimi K2 Instruct can generate longer responses up to 200,000 tokens, while Claude Opus 4.6 is limited to 128,000 tokens.

Claude Opus 4.6

Input200,000 tokens

Output128,000 tokens

Kimi K2 Instruct

Input200,000 tokens

Output200,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.6 supports multimodal inputs, whereas Kimi K2 Instruct does not.

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

Claude Opus 4.6

Text

Images

Audio

Video

Kimi K2 Instruct

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4.6 is licensed under a proprietary license, while Kimi K2 Instruct uses MIT.

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

Claude Opus 4.6

Proprietary

Closed source

Kimi K2 Instruct

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 4.6 was released on 2026-02-05, while Kimi K2 Instruct was released on 2025-07-11.

Claude Opus 4.6 is 7 months newer than Kimi K2 Instruct.

Claude Opus 4.6

Feb 5, 2026

1 months ago

6mo newer

Kimi K2 Instruct

Jul 11, 2025

8 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 Opus 4.6 is available from Anthropic. Kimi K2 Instruct is available from Fireworks, Novita. The availability of providers can affect quality of the model and reliability.