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Model Comparison

Claude Mythos Preview vs Kimi K2.6Which is better in 2026?

Claude Mythos Preview significantly outperforms across most benchmarks. Kimi K2.6 is 34.8x cheaper per token.

Verdict: Claude Mythos Preview vs Kimi K2.6 — which is better?

Claude Mythos Preview (by Anthropic) and Kimi K2.6 (by Moonshot AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude Mythos Preview outperforms in 9 benchmarks (BrowseComp, CharXiv-R, GPQA, Humanity's Last Exam, OSWorld-Verified, SWE-bench Multilingual, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0), while Kimi K2.6 is better at 0 benchmarks. Claude Mythos Preview significantly outperforms across most benchmarks.

On price, Kimi K2.6 is roughly 34.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose Claude Mythos Preview if…

  • you want the strongest raw capability — it leads on 9 of 9 shared benchmarks

Choose Kimi K2.6 if…

  • cost matters — it's about 34.8x cheaper per token
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Claude Mythos Preview outperforms in 9 benchmarks (BrowseComp, CharXiv-R, GPQA, Humanity's Last Exam, OSWorld-Verified, SWE-bench Multilingual, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0), while Kimi K2.6 is better at 0 benchmarks.

Claude Mythos Preview significantly outperforms across most benchmarks.

Fri Aug 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Kimi K2.6 costs less

For input processing, Claude Mythos Preview ($25.00/1M tokens) is 33.3x more expensive than Kimi K2.6 ($0.75/1M tokens).

For output processing, Claude Mythos Preview ($125.00/1M tokens) is 35.7x more expensive than Kimi K2.6 ($3.50/1M tokens).

In conclusion, Claude Mythos Preview is more expensive than Kimi K2.6.*

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

Lowest available price from all providers
Fri Aug 07 2026 • llm-stats.com
Anthropic
Claude Mythos Preview
Input tokens$25.00
Output tokens$125.00
Best providerAnthropic
Moonshot AI
Kimi K2.6
Input tokens$0.75
Output tokens$3.50
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Only Kimi K2.6 specifies input context (262,144 tokens). Only Kimi K2.6 specifies output context (131,072 tokens).

Anthropic
Claude Mythos Preview
Input- tokens
Output- tokens
Moonshot AI
Kimi K2.6
Input262,144 tokens
Output131,072 tokens
Fri Aug 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Mythos Preview and Kimi K2.6 support multimodal inputs.

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

Claude Mythos Preview

Text
Images
Audio
Video

Kimi K2.6

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Mythos Preview is licensed under a proprietary license, while Kimi K2.6 uses Modified MIT License.

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

Claude Mythos Preview

Proprietary

Closed source

Kimi K2.6

Modified MIT License

Open weights

Release Timeline

When each model was launched

Kimi K2.6 was released on 2026-04-20, while Claude Mythos Preview's release date is not specified.

We can confirm Kimi K2.6's release timeline, but cannot make a direct age comparison without Claude Mythos Preview's release date.

Claude Mythos Preview

—

Kimi K2.6

Apr 20, 2026

3 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 Mythos Preview is available from Anthropic. Kimi K2.6 is available from DeepInfra, Fireworks, Moonshot AI, Novita, Together.

Claude Mythos Preview

anthropic logo
Anthropic
Input Price:Input: $25.00/1MOutput Price:Output: $125.00/1M

Kimi K2.6

deepinfra logo
Deepinfra
Input Price:Input: $0.75/1MOutput Price:Output: $3.50/1M
fireworks logo
Fireworks
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
moonshot logo
Unknown Organization
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
novita logo
Novita
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
together logo
Together
Input Price:Input: $1.20/1MOutput Price:Output: $4.50/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Higher BrowseComp score (86.9% vs 86.3%)
Higher CharXiv-R score (93.2% vs 86.7%)
Higher GPQA score (94.6% vs 90.5%)
Higher Humanity's Last Exam score (64.7% vs 36.4%)
Higher OSWorld-Verified score (79.6% vs 73.1%)
Higher SWE-bench Multilingual score (87.3% vs 76.7%)
Higher SWE-Bench Pro score (77.8% vs 58.6%)
Higher SWE-Bench Verified score (93.9% vs 80.2%)
Higher Terminal-Bench 2.0 score (82.0% vs 66.7%)
Moonshot AI
Larger context window (262,144 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Mythos Preview and Kimi K2.6 side-by-side, then vote on the output you prefer.

Claude Mythos Preview
✓ Preferred
Kimi K2.6
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Mythos Preview
Moonshot AI
Kimi K2.6

FAQ

Common questions about Claude Mythos Preview vs Kimi K2.6.

Which is better, Claude Mythos Preview or Kimi K2.6?

Claude Mythos Preview significantly outperforms across most benchmarks. Claude Mythos Preview is made by Anthropic and Kimi K2.6 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Mythos Preview compare to Kimi K2.6 in benchmarks?

Claude Mythos Preview scores CyBench: 100.0%, USAMO25: 97.6%, GPQA: 94.6%, SWE-Bench Verified: 93.9%, CharXiv-R: 93.2%. Kimi K2.6 scores V*: 96.9%, AIME 2026: 96.4%, MathVision: 93.2%, HMMT Feb 26: 92.7%, GPQA: 90.5%.

Is Claude Mythos Preview cheaper than Kimi K2.6?

Kimi K2.6 is 33.3x cheaper for input tokens. Claude Mythos Preview costs $25.00/M input and $125.00/M output via anthropic. Kimi K2.6 costs $0.75/M input and $3.50/M output via deepinfra.

What are the context window sizes for Claude Mythos Preview and Kimi K2.6?

Claude Mythos Preview supports an unknown number of tokens and Kimi K2.6 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 Mythos Preview and Kimi K2.6?

Key differences include input pricing ($25.00 vs $0.75/M), licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos Preview and Kimi K2.6?

Claude Mythos Preview is developed by Anthropic and Kimi K2.6 is developed by Moonshot AI.

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