Last refreshed 2026-09-02. Next refresh: weekly.
Why use Muse Spark 1.3 on OpenRouter?
OpenRouter offers Muse Spark 1.3 with pay-as-you-go pricing at $1.25/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Muse Spark 1.3 across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: meta/muse-spark-1.3meta/muse-spark-1.3Request example
meta/muse-spark-1.3.Gotchas
- Use provider model ID "meta/muse-spark-1.3", not the LLMReference slug "muse-spark-1.3".
Compare Muse Spark 1.3 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Meta Model API | $1.25 | $4.25 |
| OpenRouter | $1.25 | $4.25 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.25 |
| Output tokens | $4.25 |
Capabilities
About Muse Spark 1.3
Muse Spark 1.3 is Meta Superintelligence Labs' latest Muse Spark checkpoint, released September 2, 2026. Official Meta Model API model ID: muse-spark-1.3. First-party models docs: the latest version, recommended for new work, tuned for agentic workflows (multi-step tool, browser, and long-horizon tasks) with improved coding over 1.2; default model in docs examples. Product line (dev.meta.ai): Built for long-horizon coding and agentic work. Cleaner code, fewer tokens. First-party research post: rolling out today in Muse Code and Meta Model API; previously available reasoning modes available today with max reasoning coming shortly after additional safety testing.