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Grok-4 Fast Reasoning vs Muse Wonder Full

Comparing Grok-4 Fast Reasoning and Muse Wonder Full across benchmarks, pricing, and capabilities.

xAI · Meta · Updated for 2026

Which is better?

Grok-4 Fast Reasoning and Muse Wonder Full trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Grok-4 Fast Reasoning

  • you want predictable pricing at $0.20/M input and $0.50/M output

Choose Muse Wonder Full

  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Grok-4 Fast Reasoning
xAI
Muse Wonder Full
Meta
Benchmark wins
—
—
Input price
$0.20 / M
— / M
Output price
$0.50 / M
— / M
Context window
2,000,000
—

Individual benchmarks

0 reported for Grok-4 Fast Reasoning · 16 for Muse Wonder Full

No common benchmarks found

Grok-4 Fast Reasoning and Muse Wonder Fulldon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Grok-4 Fast Reasoning specifies input context (2,000,000 tokens). Only Grok-4 Fast Reasoning specifies output context (30,000 tokens).

xAI
Grok-4 Fast Reasoning
Input2,000,000 tokens
Output30,000 tokens
Meta
Muse Wonder Full
Input- tokens
Output- tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok-4 Fast Reasoning and Muse Wonder Full support multimodal inputs.

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

Grok-4 Fast Reasoning

Text
Images
Audio
Video

Muse Wonder Full

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.

Grok-4 Fast Reasoning

Proprietary

Closed source

Muse Wonder Full

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-4 Fast Reasoning was released on 2025-08-28, while Muse Wonder Full was released on 2026-10-12.

Muse Wonder Full is 14 months newer than Grok-4 Fast Reasoning.

Grok-4 Fast Reasoning

Aug 28, 2025

1.1 years ago

Muse Wonder Full

Oct 12, 2026

5 days ago

1.1yr 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?

Judge for yourself.

Run your own prompts against Grok-4 Fast Reasoning and Muse Wonder Full side-by-side, then vote on the output you prefer.

Grok-4 Fast Reasoning
✓ Preferred
Muse Wonder Full
Open in Playground

FAQ

Common questions about Grok-4 Fast Reasoning vs Muse Wonder Full.

Which is better, Grok-4 Fast Reasoning or Muse Wonder Full?

Grok-4 Fast Reasoning (xAI) and Muse Wonder Full (Meta) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Grok-4 Fast Reasoning compare to Muse Wonder Full in benchmarks?

Muse Wonder Full scores MemoryBench: 85.5%, DeepSWE 1.1: 79.0%, OSWorld 2.1 (partial): 78.4%, JobBench: 75.3%, HealthBench Professional: 62.3%.

What are the context window sizes for Grok-4 Fast Reasoning and Muse Wonder Full?

Grok-4 Fast Reasoning supports 2.0M tokens and Muse Wonder Full supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Grok-4 Fast Reasoning and Muse Wonder Full?

Grok-4 Fast Reasoning is developed by xAI and Muse Wonder Full is developed by Meta.

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