Muse Spark 1.1
Mid-tierby Meta
Muse Spark 1.1 is Meta's first paid API model, opened to US developers on July 9, 2026 at roughly a quarter of OpenAI and Anthropic list rates. It is a multimodal reasoning model built for agentic and coding work, with a self-managed 1 million token context window, native primary-agent and subagent orchestration, and MCP plus custom-skill support. Meta AI chief Alexandr Wang called it the company's strongest model for agentic and coding work yet. On tool-use and agentic suites it beats the frontier in places (88.1 on MCP Atlas, 54.7 on JobBench against Opus 4.8's 48.4, and 62.1 on Humanity's Last Exam with tools over Opus 4.8's 57.9), but on pure coding it trails the leaders (61.5 on SWE-Bench Pro versus Opus 4.8 at 69.2, and 80.0 on Terminal-Bench 2.1 versus GPT-5.5 at 83.4). API pricing is $1.25 per million input tokens and $4.25 per million output, with $20 in free credits for every new account. The launch preview is limited to US developers.
Input Price
$1.25
per 1M tokens
Output Price
$4.25
per 1M tokens
Context Window
1M
tokens
Released
2026-07
API access
Capabilities
Key Strengths
- ✓Very low pricing ($1.25/$4.25), roughly a quarter of frontier rates
- ✓1M self-managed context window
- ✓Native primary-agent and subagent orchestration
- ✓MCP and custom-skill support
- ✓Tops tool-use benchmarks (88.1 MCP Atlas)
Best For
- ▸Cost-sensitive agentic pipelines
- ▸Multi-agent orchestration with tool use
- ▸MCP-driven automation
- ▸High-volume coding agents where price matters more than peak accuracy
Pricing Details
Input tokens
$1.25
per 1M tokens
Output tokens
$4.25
per 1M tokens
Estimated cost per 1K requests
$3.38
~1K input + ~500 output tokens avg
Prices are subject to change. Check the official documentation for current pricing. See the cost calculator for detailed estimates.