muse-spark · Meta
Meta's first direct self-serve metered model on the Meta Model API at $1.25/$4.25 — Meta's official priced alternative to open-weight Llama.
Last checked Aug 16, 2026. Calculations use the listed base rates; provider-specific tiers, cache writes, batch pricing, and long-context rules may differ. Note: Launch pricing from Meta's announcement; context/max-output not yet published — conservative family defaults shown. Confirm the current rate at the official provider source.
Input
$1.25
per 1M tokens
Output
$4.25
per 1M tokens
Cached input
—
not published
Context window
128K
max output 16.4K
Muse Spark cost calculator
What Muse Spark costs per task
| Use case | Input tokens | Output tokens | Cost / request | Monthly @ 1K req/day |
|---|---|---|---|---|
| Customer support chatbot | 3,500 | 350 | $0.005863 | $175.875 |
| RAG / search-augmented answers | 8,000 | 500 | $0.0121 | $363.75 |
| AI coding assistant | 12,000 | 2,000 | $0.0235 | $705.00 |
| Document summarization | 25,000 | 600 | $0.0338 | $1,014.00 |
| Agentic workflow | 40,000 | 1,500 | $0.0564 | $1,691.25 |
| Content generation | 800 | 1,200 | $0.0061 | $183.00 |
| Data extraction & tagging | 2,000 | 250 | $0.003563 | $106.875 |
| Translation | 5,000 | 5,500 | $0.0296 | $888.75 |
Assumes each use case's typical cacheable share of input. See full cost scenarios.
Compare with alternatives
| Model | Input /M | Output /M | Context | Chat request* |
|---|---|---|---|---|
| Muse Spark | $1.25 | $4.25 | 128K | $0.0084 |
| GPT-5.4 minicompare | $0.75 | $4.50 | 1.1M | $0.00525 |
| Gemini 2.5 Flash | $0.30 | $2.50 | 1M | $0.00266 |
| Mistral Medium 3.5 | $1.50 | $7.50 | 131.1K | $0.0093 |
*4,000 in + 800 out tokens, 50% cached input where available.
Related calculations
FAQ
Muse Spark costs $1.25 per 1M input tokens and $4.25 per 1M output tokens. Verified Aug 16, 2026 against https://developer.meta.com/ai/resources/blog/build-with-muse-spark/.
Muse Spark supports a 128,000-token context window with up to 16,384 output tokens per request, tokenized with Llama-family tokenizer.
At $1.25/M input and $4.25/M output, Muse Spark sits above GPT-5.4 mini ($0.75/M in, $4.50/M out) — see the comparison table for full-workload differences.