Laguna S 2.1 vs Muse Spark 1.2: Specs & Benchmark Comparison
Laguna S 2.1 is developed by Poolside, while Muse Spark 1.2 comes from Meta. Laguna S 2.1 was released in July 2026, and Muse Spark 1.2 followed a month later in August 2026. Laguna S 2.1 has a published size of about 118 billion parameters; Meta has not disclosed the parameter count of Muse Spark 1.2.
The two models share 2 published benchmarks. Muse Spark 1.2 leads on 2 of them. The widest gaps are on DeepSWE 1.1, where Muse Spark 1.2 scores 59.0% against 40.4%; Terminal-Bench 2.1, where Muse Spark 1.2 scores 83.0% against 70.2%. Averaged across everything we track, Laguna S 2.1 sits at 57.4% and Muse Spark 1.2 at 71.0%.
Laguna S 2.1 is the cheaper API at $0.10 per million input tokens and $0.20 per million output tokens, roughly 13 times cheaper than Muse Spark 1.2 at $1.25 and $4.25. Both accept a context window of about 1M tokens. Laguna S 2.1 accepts text as input, while Muse Spark 1.2 accepts text and images. On tooling, only Muse Spark 1.2 supports function calling and only Muse Spark 1.2 offers structured output.
| Characteristic | Laguna S 2.1 | Muse Spark 1.2 |
|---|---|---|
| Company | Poolside | Meta |
| Release Date | July 21, 2026 | August 5, 2026 |
| Parameters | 118B | — |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | — | 131K |
| Input Price / 1M | $0.10 | $1.25 |
| Output Price / 1M | $0.20 | $4.25 |
| Average Score | 57.4% | 71.0% |
| Benchmarks | ||
| DeepSWE 1.1 | 40.4% | 59.0% |
| Terminal-Bench 2.1 | 70.2% | 83.0% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Laguna S 2.1 — 0.6, Muse Spark 1.2 — 0.7.
Laguna S 2.1 is 18.3x cheaper: input $0.10/1M vs $1.25/1M tokens.
Same context size: 1M tokens.
Muse Spark 1.2 is newer: released 8/5/2026 vs 7/21/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Laguna S 2.1 or Muse Spark 1.2?
Which model is cheaper — Laguna S 2.1 or Muse Spark 1.2?
Which has a larger context window — Laguna S 2.1 or Muse Spark 1.2?
The Laguna S 2.1 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 Laguna S 2.1 or Muse Spark 1.2 page. See also the complete list of AI model comparisons.