Inkling-Small vs Muse Spark 1.3: Specs & Benchmark Comparison
Inkling-Small is developed by Thinking Machines Lab, while Muse Spark 1.3 comes from Meta. Inkling-Small was released in July 2026, and Muse Spark 1.3 followed 2 months later in September 2026. Inkling-Small has a published size of about 276 billion parameters; Meta has not disclosed the parameter count of Muse Spark 1.3.
The two models share 2 published benchmarks. Muse Spark 1.3 leads on 2 of them. The widest gaps are on Terminal-Bench 2.1, where Muse Spark 1.3 scores 88.8% against 64.7%; GDPval-AA, where Muse Spark 1.3 scores 58.5% against 42.3%. Averaged across everything we track, Inkling-Small sits at 60.3% and Muse Spark 1.3 at 73.4%.
Inkling-Small is the cheaper API at $0.30 per million input tokens and $1.20 per million output tokens, roughly 4 times cheaper than Muse Spark 1.3 at $1.25 and $4.25. Muse Spark 1.3 takes the larger context window at 1M tokens, compared with 256K for Inkling-Small. Inkling-Small accepts text, images, and audio 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 | Inkling-Small | Muse Spark 1.3 |
|---|---|---|
| Company | Thinking Machines Lab | Meta |
| Release Date | July 30, 2026 | September 2, 2026 |
| Parameters | 276B | — |
| Multimodal | Yes | Yes |
| Context (input) | 256K | 1.0M |
| Context (output) | 256K | 944K |
| Input Price / 1M | $0.30 | $1.25 |
| Output Price / 1M | $1.20 | $4.25 |
| Average Score | 60.3% | 73.4% |
| Benchmarks | ||
| Terminal-Bench 2.1 | 64.7% | 88.8% |
| GDPval-AA | 42.3% | 58.5% |
Visual Benchmark Comparison
Verdict
Muse Spark 1.3 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Inkling-Small — 0.6, Muse Spark 1.3 — 0.7.
Inkling-Small is 3.7x cheaper: input $0.30/1M vs $1.25/1M tokens.
Muse Spark 1.3 supports a larger context: 1M vs 256K tokens.
Muse Spark 1.3 is newer: released 9/2/2026 vs 7/30/2026.
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Frequently Asked Questions
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The Inkling-Small 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 Inkling-Small or Muse Spark 1.3 page. See also the complete list of AI model comparisons.