Grok Code Fast 1 vs Muse Spark 1.3
Muse Spark 1.3 leads the LLM Stats Score 54.3 to 20.7. Grok Code Fast 1 is 3.8x cheaper per token.
xAI · Meta · Updated for 2026
Which is better?
Muse Spark 1.3 leads the overall LLM Stats Score 54.3 to 20.7, ranking #6 overall.
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 1.3 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok Code Fast 1
- cost matters — it's about 3.8x cheaper per token
Choose Muse Spark 1.3
- overall performance matters — it scores 54.3 and ranks #6 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Sep 2026
At a glance
The differences that matter most.
Individual benchmarks
1 reported for Grok Code Fast 1 · 11 for Muse Spark 1.3
Grok Code Fast 1 and Muse Spark 1.3don'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
Pricing Analysis
Price comparison per million tokens
For input processing, Grok Code Fast 1 ($0.20/1M tokens) is 6.3x cheaper than Muse Spark 1.3 ($1.25/1M tokens).
For output processing, Grok Code Fast 1 ($1.50/1M tokens) is 2.8x cheaper than Muse Spark 1.3 ($4.25/1M tokens).
In conclusion, Muse Spark 1.3 is more expensive than Grok Code Fast 1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark 1.3 accepts 1,048,576 input tokens compared to Grok Code Fast 1's 256,000 tokens. Muse Spark 1.3 can generate longer responses up to 943,718 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.
Input capabilities
Documented input modalities across available providers
Muse Spark 1.3 supports multimodal inputs, whereas Grok Code Fast 1 does not.
Muse Spark 1.3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Grok Code Fast 1
Muse Spark 1.3
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Grok Code Fast 1 was released on 2025-08-28, while Muse Spark 1.3 was released on 2026-09-02.
Muse Spark 1.3 is 12 months newer than Grok Code Fast 1.
Aug 28, 2025
1.1 years ago
Sep 2, 2026
2 weeks ago
1.0yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Grok Code Fast 1 is available from xAI. Muse Spark 1.3 is available from Meta Model API.
Grok Code Fast 1
Muse Spark 1.3
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok Code Fast 1 and Muse Spark 1.3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok Code Fast 1 vs Muse Spark 1.3.