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Model registry / Meta / Muse / Muse Spark 1.2

Muse Spark 1.2

Muse Spark 1.2 is a coding-focused update to Muse Spark 1.1 with improvements in code generation, complex debugging, codebase understanding, and end-to-end developer workflows.

Line

Muse

Weights

API only

Released

2026-08-05

Context

1.05M

Input

$1.25 / 1M

Output

$4.25 / 1M

Max output

131K

Coverage

not covered yet

Overview

Muse Spark 1.2 is a coding-focused update to Muse Spark 1.1 from Meta. It improves code generation, complex debugging, codebase understanding, and end-to-end developer workflows. It has a context window of 1,048,576 tokens and a maximum output of 131,072 tokens. It is not open weights. It supports reasoning mode and tool calling. It accepts audio, image, pdf, text, and video, and returns text. Pricing starts at $1.25 per million input tokens and $4.25 per million output tokens, with cached input at $0.15 per million tokens.

Specs

Released2026-08-05
LineMeta · Muse
WeightsAPI only
Context1.05M tokens
Max output131K tokens
Inputaudio, image, pdf, text, video
Outputtext
ReasoningYes
Tool callingYes
Knowledge cutoffnot stated
API idmuse-spark-1.2

Pricing

Input$1.25 / 1M tokens
Cached input$0.15 / 1M tokens
Output$4.25 / 1M tokens

Same headline figures as Muse Spark 1.1.

Range across the hosts that serve it: up to $1.38 per 1M input tokens.

Strengths

  • Improved code generation
  • Complex debugging support
  • Codebase understanding
  • End-to-end developer workflows
  • 1M token context window and 131K output limit

Best for

  • Reach for it for code generation and debugging
  • Reach for it for understanding large codebases
  • Reach for it for end-to-end developer workflows
  • Reach for it for processing multimodal inputs in coding tasks

How to access

ProviderModel id
AIHubMixmuse-spark-1.2
Abacusmuse-spark-1.2
DevPass (LLM Gateway)muse-spark-1.2
Kilo Gatewaymuse-spark-1.2
LLM Gatewaymuse-spark-1.2
Merge Gatewaymuse-spark-1.2
Metamuse-spark-1.2
NanoGPTmuse-spark-1.2
OpenCode Zenmuse-spark-1.2
OpenRoutermuse-spark-1.2
Oppermuse-spark-1.2
OrcaRoutermuse-spark-1.2

13 hosts serve this model at the price above · the maker's documentation

Muse: every version

VersionReleasedContextInput
Muse Spark 1.3Current2026-09-021.05M$1.25
Muse Spark 1.22026-08-051.05M$1.25
Muse Spark 1.12026-04-081.05M$1.25

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

FAQ

What is the context window?
The context window is 1,048,576 tokens.
Is it open weights?
No, the weights are not open.
What is the pricing?
Input from $1.25 per million tokens, output from $4.25 per million tokens, cached input from $0.15 per million tokens.
ProprietaryReasoning1.05M context