Model Comparison

Claude Opus 4.8 vs Muse SparkWhich is better in 2026?

Claude Opus 4.8 significantly outperforms across most benchmarks.

Verdict: Claude Opus 4.8 vs Muse Spark — which is better?

Claude Opus 4.8 (by Anthropic) and Muse Spark (by Meta) 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 Opus 4.8 outperforms in 8 benchmarks (CharXiv-R, DeepSearchQA, GDPval-AA, GPQA, ScreenSpot Pro, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0), while Muse Spark is better at 1 benchmark (Humanity's Last Exam). Claude Opus 4.8 significantly outperforms across most benchmarks.

Choose Claude Opus 4.8 if…

  • you want the strongest raw capability — it leads on 8 of 9 shared benchmarks
  • you want the most recent training data — it shipped May 2026

Choose Muse Spark if…

  • you are already invested in the Meta ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Claude Opus 4.8 outperforms in 8 benchmarks (CharXiv-R, DeepSearchQA, GDPval-AA, GPQA, ScreenSpot Pro, SWE-Bench Pro, SWE-Bench Verified, Terminal-Bench 2.0), while Muse Spark is better at 1 benchmark (Humanity's Last Exam).

Claude Opus 4.8 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 Claude Opus 4.8 specifies input context (1,000,000 tokens). Only Claude Opus 4.8 specifies output context (128,000 tokens).

Anthropic
Claude Opus 4.8
Input1,000,000 tokens
Output128,000 tokens
Meta
Muse Spark
Input- tokens
Output- tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.8 and Muse Spark support multimodal inputs.

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

Claude Opus 4.8

Text
Images
Audio
Video

Muse Spark

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 Opus 4.8

Proprietary

Closed source

Muse Spark

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.8 was released on 2026-05-28, while Muse Spark was released on 2026-04-08.

Claude Opus 4.8 is 2 months newer than Muse Spark.

Claude Opus 4.8

May 28, 2026

1 months ago

1mo newer
Muse Spark

Apr 8, 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

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Higher CharXiv-R score (89.9% vs 86.4%)
Higher DeepSearchQA score (93.1% vs 74.8%)
Higher GDPval-AA score (54.6% vs 38.8%)
Higher GPQA score (93.6% vs 89.5%)
Higher ScreenSpot Pro score (87.9% vs 84.1%)
Higher SWE-Bench Pro score (69.2% vs 52.4%)
Higher SWE-Bench Verified score (88.6% vs 77.4%)
Higher Terminal-Bench 2.0 score (74.6% vs 59.0%)
Meta
Higher Humanity's Last Exam score (58.4% vs 57.9%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 4.8 and Muse Spark side-by-side, then vote on the output you prefer.

Claude Opus 4.8
✓ Preferred
Muse Spark
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.8
Meta
Muse Spark

FAQ

Common questions about Claude Opus 4.8 vs Muse Spark.

Which is better, Claude Opus 4.8 or Muse Spark?

Claude Opus 4.8 significantly outperforms across most benchmarks. Claude Opus 4.8 is made by Anthropic and Muse Spark is made by Meta. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.8 compare to Muse Spark in benchmarks?

Claude Opus 4.8 scores GPQA: 93.6%, DeepSearchQA: 93.1%, CharXiv-R: 89.9%, SWE-Bench Verified: 88.6%, ScreenSpot Pro: 87.9%. Muse Spark scores Tau2 Telecom: 91.5%, GPQA: 89.5%, CharXiv-R: 86.4%, ScreenSpot Pro: 84.1%, IPhO 2025: 82.6%.

What are the context window sizes for Claude Opus 4.8 and Muse Spark?

Claude Opus 4.8 supports 1.0M tokens and Muse Spark supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Claude Opus 4.8 and Muse Spark?

Claude Opus 4.8 is developed by Anthropic and Muse Spark is developed by Meta.

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