Laguna S 2.1 vs Muse Spark 1.3: Specs & Benchmark Comparison
Laguna S 2.1 is developed by Poolside, while Muse Spark 1.3 comes from Meta. Laguna S 2.1 was released in July 2026, and Muse Spark 1.3 followed 2 months later in September 2026. Laguna S 2.1 has a published size of about 118 billion parameters; Meta has not disclosed the parameter count of Muse Spark 1.3.
The two models share 3 published benchmarks. Muse Spark 1.3 leads on 3 of them. The widest gaps are on DeepSWE 1.1, where Muse Spark 1.3 scores 75.4% against 40.4%; Terminal-Bench 2.1, where Muse Spark 1.3 scores 88.8% against 70.2%. Averaged across everything we track, Laguna S 2.1 sits at 57.4% and Muse Spark 1.3 at 73.4%.
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 1.3 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 1.3 accepts text, images, audio, and video. On tooling, only Muse Spark 1.3 supports function calling and only Muse Spark 1.3 offers structured output.
| Characteristic | Laguna S 2.1 | Muse Spark 1.3 |
|---|---|---|
| Company | Poolside | Meta |
| Release Date | July 21, 2026 | September 2, 2026 |
| Parameters | 118B | — |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | — | 944K |
| Input Price / 1M | $0.10 | $1.25 |
| Output Price / 1M | $0.20 | $4.25 |
| Average Score | 57.4% | 73.4% |
| Benchmarks | ||
| DeepSWE 1.1 | 40.4% | 75.4% |
| Terminal-Bench 2.1 | 70.2% | 88.8% |
| SWE Atlas - Codebase QnA | 46.2% | 59.4% |
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 1.3 — 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 1.3 is newer: released 9/2/2026 vs 7/21/2026.
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Frequently Asked Questions
Which is better for coding — Laguna S 2.1 or Muse Spark 1.3?
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The Laguna S 2.1 and Muse Spark 1.3 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 1.3 page. See also the complete list of AI model comparisons.