LLM Reference
OpenRouter

Muse Spark 1.3 on OpenRouter

Muse · AI at Meta

Serverless

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 case
Input / 1M
$1.25
Output / 1M
$4.25
Cache
read $0.15
Batch
Not sourced

Setup recipe

Docs fallback
Install
Use the provider REST API or SDK
Auth
Create a provider API key
Call
model: meta/muse-spark-1.3
Model ID
meta/muse-spark-1.3

Request example

Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID 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

ProviderInput (per 1M)Output (per 1M)
Meta Model API$1.25$4.25
OpenRouter$1.25$4.25

Pricing

TypePrice (per 1M)
Input tokens$1.25
Output tokens$4.25

Capabilities

VisionMultimodalReasoningJSON / Tool useStructured OutputsPrompt Caching

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.

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