Meta

Muse Spark Open API pricing.

Muse Spark Open is Meta’s model on the API market, released 15 Oct 2026. Prices are per million tokens in USD, as last read from the price list.

$1.25Input / 1M
$4.25Output / 1M
1.0MContext
944KMax output
Capability scores
Epoch AI
Epoch Capabilities Index
155
Range 153 to 157 · #39 of 271 models Epoch has scored

The index combines many benchmarks into one general-capability score; the range is how sure Epoch is of the number. Each area score is this site's average of the model's Epoch results in that area, where 0 is what guessing would score and 100 is perfect. Compare every model, and value for money →

Source: Epoch AI, Capabilities & benchmarking (licensed CC BY 4.0). Data refreshed 2 November 2026. These are Epoch's own tests; other benchmark sites can rank models differently.

Cheaper models that come close
Our working on Epoch's index
  1. GLM-5.3-Flash · Z.ai (Zhipu AI)index 153.22 (2 below) · 98% cheaper
  2. DeepSeek V4 Flash 0731 · DeepSeekindex 154.94 · 93% cheaper
  3. DeepSeek V4.1 Flash · DeepSeekindex 156.11 · 92% cheaper
  4. Claude Haiku 5.5 · Anthropicindex 160.37 · 90% cheaper

Models within 5 points of Muse Spark Open on Epoch's Capabilities Index that cost less, comparing a typical chat mix (three parts input to one part output). A few points of index is a small difference and says nothing about your task: a place to start testing, not a verdict. Capability against price for every model.

Specification
USD per million tokens
Provider
Meta
Model id
meta/muse-spark-open
Input
$1.25
Output
$4.25
Cached input
$0.15
Context window
1.0M tokens
Maximum output
944K tokens
Takes
text, image, video, file, audio
Returns
text
Tool use
Yes
Reasoning
Yes
Released
15 Oct 2026
First tracked
15 Oct 2026

At $1.25 per million input tokens, Muse Spark Open is dearer than 241 of the 340 models on the price list.

Price changes
Tracked since 17 Sept 2026

No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.

Want an email when this model's price changes? Tell us →

Coverage
6 stories
  1. Guardian AI ·
    Meta releases Muse Spark Open, a new ‘open-weight’ AI model
  2. SiliconANGLE AI ·
    Meta releases 816B-parameter Muse Spark Open for coding and agent work
  3. The Decoder ·
    Muse Spark Open is Meta's answer to Qwen, GLM, and Kimi in the open-weight race
  4. NVIDIA Developer Blog ·
    Scale Agentic Coding Workflows with Meta’s Muse Spark Open on NVIDIA GB300 NVL72
  5. AWS Machine Learning Blog ·
    Meta’s Muse Spark Open now available in Amazon SageMaker JumpStart
  6. Hugging Face Blog ·
    Welcome Muse Spark Open: open-weight frontier multimodal mixture-of-experts model from Meta
More from Meta
Cheapest input first
  1. Muse Spark 1.3 Contributor$0.10 in · $0.20 out
  2. Muse Spark 1.2 Contributor$0.10 in · $0.20 out
  3. Muse Glimmer 30B$0.30 in · $1.20 out
  4. Muse Spark 1.3$1.25 in · $4.25 out
  5. Muse Spark 1.2$1.25 in · $4.25 out
  6. Muse Spark 1.1$1.25 in · $4.25 out
  7. Muse Wonder$4.00 in · $20 out

Prices and specifications come from OpenRouter’s catalogue, last read 2 Nov 2026. A provider’s own price may differ; how this is collected.