Muse Spark 1.2 vs Muse Spark 1.3
API pricing, context window and capabilities for Muse Spark 1.2 and Muse Spark 1.3, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersMuse Spark 1.3 wins on Terminal-Bench and on intelligence.
Price
Tied
Terminal-Bench
Muse Spark 1.3
Intelligence
Muse Spark 1.3
Context window
Tied
Key takeaways
who wins on what, from the published numbersMuse Spark 1.2 wins
No clear edge on the tracked metrics.
Muse Spark 1.3 wins
No clear edge on the tracked metrics.
Cheaper overall
Tied
Larger context
Tied
More providers
Tied
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
| Muse Spark 1.2 | Muse Spark 1.3 | |
|---|---|---|
| Input $/1M | $1.25via Meta | $1.25via Azure |
| Output $/1M | $4.25via Meta | $4.25via Azure |
| Context window | 1M | 1M |
| Max output | 131K | 131K |
| Serving providers | 4 | 4 |
| Date | Released Aug 5, 2026 | Released Sep 2, 2026 |
Benchmarks
Benchmark scores, side by side| Muse Spark 1.2 | Muse Spark 1.3 | |
|---|---|---|
| Intelligence | 39.6 | 48.1 best |
| Terminal-Bench | 80% | 84% best |
| GPQA Diamond | 90% | 94% best |
| Output speed | 291 t/s best | 128 t/s |
| Latency (TTFT) | 14.21s best | 41.69s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Muse Spark 1.2
via OpenRouter
$11
Muse Spark 1.3
via Meta
$11
Capabilities
feature support, side by side| Feature | Muse Spark 1.2 | Muse Spark 1.3 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, Muse Spark 1.2 or Muse Spark 1.3?
Muse Spark 1.2 and Muse Spark 1.3 have the same cheapest published input and output rates.
What is the context window difference between Muse Spark 1.2 and Muse Spark 1.3?
Both Muse Spark 1.2 and Muse Spark 1.3 have about a 1M-token context window.
How do Muse Spark 1.2 and Muse Spark 1.3 compare on benchmarks?
On the tracked benchmarks, Muse Spark 1.3 leads on Terminal-Bench, and Muse Spark 1.3 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Sep 28, 2026
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