Hy4 preview vs Muse Spark 1.2: Specs & Benchmark Comparison
Hy4 preview is developed by Tencent, while Muse Spark 1.2 comes from Meta. Both were released in August 2026. Hy4 preview has a published size of about 770 billion parameters; Meta has not disclosed the parameter count of Muse Spark 1.2.
We have 32 benchmark results for Hy4 preview and 3 benchmark results for Muse Spark 1.2, but they overlap on a single test: Terminal-Bench 2.1, where Hy4 preview scores 85.4% against 83.0%.
Muse Spark 1.2 is available through an API at $1.25 per million input tokens with a 1M-token context window. We do not track a hosted API for Hy4 preview, so pricing and context cannot be compared directly.
| Characteristic | Hy4 preview | Muse Spark 1.2 |
|---|---|---|
| Company | Tencent | Meta |
| Release Date | August 28, 2026 | August 5, 2026 |
| Parameters | 770B | — |
| Multimodal | No | Yes |
| Context (input) | — | 1.0M |
| Context (output) | — | 131K |
| Input Price / 1M | — | $1.25 |
| Output Price / 1M | — | $4.25 |
| Average Score | 58.7% | 71.0% |
| Benchmarks | ||
| Terminal-Bench 2.1 | 85.4% | 83.0% |
Visual Benchmark Comparison
Verdict
Hy4 preview leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Hy4 preview — 0.6, Muse Spark 1.2 — 0.7.
Hy4 preview is newer: released 8/28/2026 vs 8/5/2026.
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Frequently Asked Questions
Which is better for coding — Hy4 preview or Muse Spark 1.2?
Which model is cheaper — Hy4 preview or Muse Spark 1.2?
Which has a larger context window — Hy4 preview or Muse Spark 1.2?
The Hy4 preview 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 Hy4 preview or Muse Spark 1.2 page. See also the complete list of AI model comparisons.