Model Comparison

Muse Spark vs Kimi K2.6Which is better in 2026?

Kimi K2.6 significantly outperforms across most benchmarks.

Verdict: Muse Spark vs Kimi K2.6 — which is better?

Muse Spark (by Meta) 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.

Muse Spark outperforms in 2 benchmarks (Humanity's Last Exam, MMMU-Pro), while Kimi K2.6 is better at 7 benchmarks (CharXiv-R, DeepSearchQA, GDPval-AA, GPQA, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0). Kimi K2.6 significantly outperforms across most benchmarks.

Choose Muse Spark if…

  • you are already invested in the Meta ecosystem

Choose Kimi K2.6 if…

  • you want the strongest raw capability — it leads on 7 of 9 shared benchmarks
  • you want the most recent training data — it shipped Apr 2026
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Muse Spark outperforms in 2 benchmarks (Humanity's Last Exam, MMMU-Pro), while Kimi K2.6 is better at 7 benchmarks (CharXiv-R, DeepSearchQA, GDPval-AA, GPQA, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0).

Kimi K2.6 significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

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).

Meta
Muse Spark
Input- tokens
Output- tokens
Moonshot AI
Kimi K2.6
Input262,144 tokens
Output131,072 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Muse Spark and Kimi K2.6 support multimodal inputs.

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

Muse Spark

Text
Images
Audio
Video

Kimi K2.6

Text
Images
Audio
Video

License

Usage and distribution terms

Muse Spark 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.

Muse Spark

Proprietary

Closed source

Kimi K2.6

Modified MIT License

Open weights

Release Timeline

When each model was launched

Muse Spark was released on 2026-04-08, while Kimi K2.6 was released on 2026-04-20.

Kimi K2.6 is 0 month newer than Muse Spark.

Muse Spark

Apr 8, 2026

3 months ago

Kimi K2.6

Apr 20, 2026

2 months ago

1w 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

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Meta
Higher Humanity's Last Exam score (58.4% vs 36.4%)
Higher MMMU-Pro score (80.4% vs 80.1%)
Moonshot AI
Larger context window (262,144 tokens)
Has open weights
Higher CharXiv-R score (86.7% vs 86.4%)
Higher DeepSearchQA score (83.0% vs 74.8%)
Higher GDPval-AA score (40.1% vs 38.8%)
Higher GPQA score (90.5% vs 89.5%)
Higher SWE-Bench Pro score (58.6% vs 52.4%)
Higher SWE-Bench Verified score (80.2% vs 77.4%)
Higher Terminal-Bench 2.0 score (66.7% vs 59.0%)

Detailed Comparison

Interactive Arena

Judge for yourself.

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

Muse Spark
✓ Preferred
Kimi K2.6
Open in Playground
AI Model Comparison Table
Feature
Meta
Muse Spark
Moonshot AI
Kimi K2.6

FAQ

Common questions about Muse Spark vs Kimi K2.6.

Which is better, Muse Spark or Kimi K2.6?

Kimi K2.6 significantly outperforms across most benchmarks. Muse Spark is made by Meta 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 Muse Spark compare to Kimi K2.6 in benchmarks?

Muse Spark scores Tau2 Telecom: 91.5%, GPQA: 89.5%, CharXiv-R: 86.4%, ScreenSpot Pro: 84.1%, IPhO 2025: 82.6%. Kimi K2.6 scores V*: 96.9%, AIME 2026: 96.4%, MathVision: 93.2%, HMMT Feb 26: 92.7%, GPQA: 90.5%.

What are the context window sizes for Muse Spark and Kimi K2.6?

Muse Spark 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 Muse Spark and Kimi K2.6?

Key differences include licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Spark and Kimi K2.6?

Muse Spark is developed by Meta and Kimi K2.6 is developed by Moonshot AI.

Related comparisons