Model Comparison

Grok Code Fast 1 vs Muse Spark 1.1Which is better in 2026?

Comparing Grok Code Fast 1 and Muse Spark 1.1 across benchmarks, pricing, and capabilities.

Verdict: Grok Code Fast 1 vs Muse Spark 1.1 — which is better?

Grok Code Fast 1 (by xAI) and Muse Spark 1.1 (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.

On price, Grok Code Fast 1 is roughly 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Muse Spark 1.1 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Grok Code Fast 1 if…

  • cost matters — it's about 3.8x cheaper per token

Choose Muse Spark 1.1 if…

  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jul 2026

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok Code Fast 1 and Muse Spark 1.1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok Code Fast 1 costs less

For input processing, Grok Code Fast 1 ($0.20/1M tokens) is 6.3x cheaper than Muse Spark 1.1 ($1.25/1M tokens).

For output processing, Grok Code Fast 1 ($1.50/1M tokens) is 2.8x cheaper than Muse Spark 1.1 ($4.25/1M tokens).

In conclusion, Muse Spark 1.1 is more expensive than Grok Code Fast 1.*

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

Lowest available price from all providers
Sun Jul 26 2026 • llm-stats.com
xAI
Grok Code Fast 1
Input tokens$0.20
Output tokens$1.50
Best providerxAI
Meta
Muse Spark 1.1
Input tokens$1.25
Output tokens$4.25
Best providerMeta
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Muse Spark 1.1 accepts 1,048,576 input tokens compared to Grok Code Fast 1's 256,000 tokens. Muse Spark 1.1 can generate longer responses up to 131,072 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.

xAI
Grok Code Fast 1
Input256,000 tokens
Output10,000 tokens
Meta
Muse Spark 1.1
Input1,048,576 tokens
Output131,072 tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Muse Spark 1.1 supports multimodal inputs, whereas Grok Code Fast 1 does not.

Muse Spark 1.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok Code Fast 1

Text
Images
Audio
Video

Muse Spark 1.1

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 Code Fast 1

Proprietary

Closed source

Muse Spark 1.1

Proprietary

Closed source

Release Timeline

When each model was launched

Grok Code Fast 1 was released on 2025-08-28, while Muse Spark 1.1 was released on 2026-07-09.

Muse Spark 1.1 is 11 months newer than Grok Code Fast 1.

Grok Code Fast 1

Aug 28, 2025

11 months ago

Muse Spark 1.1

Jul 9, 2026

2 weeks ago

10mo 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

Provider Availability

Grok Code Fast 1 is available from xAI. Muse Spark 1.1 is available from Meta Model API.

Grok Code Fast 1

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $1.50/1M

Muse Spark 1.1

meta logo
Meta
Input Price:Input: $1.25/1MOutput Price:Output: $4.25/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Less expensive input tokens
Less expensive output tokens
Meta
Larger context window (1,048,576 tokens)
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok Code Fast 1 and Muse Spark 1.1 side-by-side, then vote on the output you prefer.

Grok Code Fast 1
✓ Preferred
Muse Spark 1.1
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok Code Fast 1
Meta
Muse Spark 1.1

FAQ

Common questions about Grok Code Fast 1 vs Muse Spark 1.1.

Which is better, Grok Code Fast 1 or Muse Spark 1.1?

Grok Code Fast 1 (xAI) and Muse Spark 1.1 (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 Code Fast 1 compare to Muse Spark 1.1 in benchmarks?

Grok Code Fast 1 scores SWE-Bench Verified: 70.8%. Muse Spark 1.1 scores CharXiv-R: 88.4%, MCP Atlas: 88.1%, OSWorld-Verified: 80.8%, Terminal-Bench 2.1: 80.0%, BabyVision: 76.3%.

Is Grok Code Fast 1 cheaper than Muse Spark 1.1?

Grok Code Fast 1 is 6.3x cheaper for input tokens. Grok Code Fast 1 costs $0.20/M input and $1.50/M output via xai. Muse Spark 1.1 costs $1.25/M input and $4.25/M output via meta.

What are the context window sizes for Grok Code Fast 1 and Muse Spark 1.1?

Grok Code Fast 1 supports 256K tokens and Muse Spark 1.1 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok Code Fast 1 and Muse Spark 1.1?

Key differences include context window (256K vs 1.0M), input pricing ($0.20 vs $1.25/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok Code Fast 1 and Muse Spark 1.1?

Grok Code Fast 1 is developed by xAI and Muse Spark 1.1 is developed by Meta.

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