Grok 4.5 vs Muse Spark 1.2: Specs & Benchmark Comparison
| Characteristic | Grok 4.5 | Muse Spark 1.2 |
|---|---|---|
| Company | xAI | Meta |
| Release Date | July 16, 2026 | August 5, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 500K | 1.0M |
| Context (output) | — | 131K |
| Input Price / 1M | $2.00 | $0.10 |
| Output Price / 1M | $6.00 | $0.20 |
| Average Score | 0.8 | 0.7 |
| Benchmarks | ||
| Terminal-Bench 2.1 | 0.8 | 0.8 |
Visual Benchmark Comparison
Grok 4.5
Muse Spark 1.2
Terminal-Bench 2.10.8 vs 0.8
0.8
0.8
Verdict
Muse Spark 1.2 leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Grok 4.5 — 0.8, Muse Spark 1.2 — 0.7.
API Cost
Muse Spark 1.2 is 26.7x cheaper: input $0.10/1M vs $2.00/1M tokens.
Context Window
Muse Spark 1.2 supports a larger context: 1M vs 500K tokens.
Recency
Muse Spark 1.2 is newer: released 8/5/2026 vs 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Grok 4.5 or Muse Spark 1.2?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Grok 4.5 or Muse Spark 1.2?
Muse Spark 1.2 is cheaper for input: $0.10 per 1M tokens vs $2.00.
Which has a larger context window — Grok 4.5 or Muse Spark 1.2?
Muse Spark 1.2 supports a larger context: 1,000,000 tokens vs 500,000.
The Grok 4.5 and Muse Spark 1.2 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Grok 4.5 or Muse Spark 1.2 page. See also the complete list of AI model comparisons.