Muse Spark 1.3 — API Pricing & Benchmarks
Muse Spark 1.3 is Meta's flagship reasoning model, released in 2026-09. The API costs $1.25 per 1M input tokens and $4.25 per 1M output tokens ($2.00 blended at a 3:1 ratio), with cached input at $0.15. It supports a 1.0M-token context window. On the independently measured Artificial Analysis Intelligence Index it scores 48.1, ranking #6 of 72 models tracked on this site, with a median output speed of 252 tokens/sec.
Explore provider routes and additional benchmark sources for Muse Spark 1.3
| Provider | Meta |
| Input price / 1M tokens | $1.25 |
| Output price / 1M tokens | $4.25 |
| Cached input / 1M tokens | $0.15 |
| Blended price (3:1) | $2.00 |
| Context window | 1.0M |
| Max output tokens | — |
| Knowledge cutoff | — |
| License | proprietary |
| Input modalities | T+I+V |
| Output speed (tok/s) | 252 |
| Released | 2026-09 |
| Artificial Analysis Intelligence Index | 48.1 |
| LMArena Elo | 1490 |
| GPQA Diamond | 93.5% |
| Humanity's Last Exam | 48.7% |
Where Muse Spark 1.3 fits
On a blended 3:1 basis Muse Spark 1.3 costs $2.00 per 1M tokens, cheaper than 44% of the 84 priced models in this index. As Meta's flagship it is aimed at the hardest workloads — complex reasoning, agentic coding and multi-step tool use — where output quality dominates cost. Measured output speed of 252 tokens/sec is well above the index median of 107, making it suitable for interactive, user-facing use. Cached input is priced at $0.15 (88% below standard input), which rewards prompt structures with long stable prefixes — see our caching guide.
Price history
| Period | Input $/1M | Output $/1M | Cached $/1M |
|---|---|---|---|
| 2026-09-02 → current | $1.25 | $4.25 | $0.15 |
No list-price changes recorded since tracking began. Full dataset: price-history.json (CC BY 4.0).
Alternatives at a similar price
- Claude Haiku 4.5 (Anthropic) — $2.00/1M blended
- Muse Spark 1.2 (Meta) — $2.00/1M blended, AA Index 39.6
- Muse Spark 1.1 (Meta) — $2.00/1M blended, AA Index 33.7
- DeepSeek V4 Pro (DeepSeek) — $1.98/1M blended, AA Index 36
Compare Muse Spark 1.3
About Meta
Meta's Muse Spark models succeed the Llama line as its production API offering, posting strong arena Elo and Intelligence Index scores at aggressive mid-tier prices.