Muse Spark 1.3 API pricing
Official Meta list price, last checked Oct 29, 2026. Updated Oct 29, 2026.
Muse Spark 1.3 costs $1.25 per 1M input tokens and $4.25 per 1M output tokens, cached input at $0.15, and a 1M-token context window, per Meta's official pricing page (checked Oct 29, 2026). It's priced in the middle of the pack: number 51 of 77 by blended price ($2 per 1M tokens at a 3 to 1 input to output mix). On LMArena's Code Arena it ranks #14 of 50 models we price (relative score 43 out of 100). Cheaper pick: MiMo-V2.6 Flash scores 36 against 43 on the same board at $0.175 blended, 11.4x less. It's also one of our value picks for creative writing, roleplay and characters.
Muse Spark 1.3 price per million tokens
| Muse Spark 1.3 price per million tokens | USD |
|---|---|
| Input | $1.25 |
| Cached input | $0.15 |
| Output | $4.25 |
| Blended, 3 parts input to 1 part output | $2 |
| Context window | 1M tokens |
Official note from Meta: Contributor mode (trains on your data): $0.10 in, $0.20 out.
What Muse Spark 1.3 costs for real work
List-price estimates for a month, no discounts. Our math, not a quote: change the token counts in the plan vs API calculator.
| Workload | Tokens a month | Muse Spark 1.3 | GPT-6.1 Terra | DeepSeek V4.1 Flash |
|---|---|---|---|---|
| Light: a side project or personal assistant | 2M in, 0.5M out | $4.62 | $4.50 | $1.20 |
| Medium: a small team or one product feature | 20M in, 5M out | $46.25 | $45.00 | $12.00 |
| Heavy: a production app | 200M in, 50M out | $462 | $450 | $120 |
| Medium with 80% of input cached | 20M in (16M cached), 5M out | $28.65 | $29.80 | $7.30 |
How Muse Spark 1.3 ranks on LMArena
Relative score: 100 is the top model we price on that board. Rank is among the models in our price table, not the full leaderboard.
| Board | Rank | Score /100 |
|---|---|---|
| Coding (Code Arena) | #14 of 50 | 43 |
| Chat (Text Arena) | #6 of 51 | 52 |
| Creative writing (Text Arena creative writing) | #11 of 51 | 25 |
| Roleplay and characters (Text Arena multi-turn) | #8 of 51 | 27 |
| Reasoning and math (Text Arena math) | #7 of 51 | 58 |
| Vision (Vision Arena) | #5 of 33 | 77 |
| Long documents (Document Arena) | #7 of 11 | 73 |
| Cheap bulk and agents (Agent Arena) | #13 of 34 | 52 |
Closest rivals to Muse Spark 1.3
The models nearest in price, other makers first. Ranks are on Code Arena, where we have them.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| GPT-6.1 Terra | $1 / $5 | $2 | GPT-6.1 Terra wins: same price, higher score. Compare |
| DeepSeek V4 Pro | $1.32 / $3.96 | $1.98 | Muse Spark 1.3 wins: same price, higher score. Compare |
| GLM-5.3 | $1.40 / $4.40 | $2.15 | Muse Spark 1.3 wins on both. Compare |
| GLM-5.2 | $1.40 / $4.40 | $2.15 | Muse Spark 1.3 wins on both. Compare |
Cheaper alternatives to Muse Spark 1.3
At least 40% cheaper blended, best LMArena score first.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| DeepSeek V4.1 Flash | $0.30 / $1.20 | $0.525 | DeepSeek V4.1 Flash wins on both. Compare |
| MiMo-V2.6 Flash | $0.14 / $0.28 | $0.175 | MiMo-V2.6 Flash for price, Muse Spark 1.3 for quality. Compare |
| MiMo-V2.6 Pro | $0.435 / $0.87 | $0.5437 | MiMo-V2.6 Pro for price, Muse Spark 1.3 for quality. Compare |
More from Meta
FAQ
How much does the Muse Spark 1.3 API cost per million tokens?
$1.25 per 1M input tokens and $4.25 per 1M output tokens, plus $0.15 per 1M for cached input, as of Oct 29, 2026. A typical 3 to 1 input to output mix works out to $2 per 1M tokens.
Does Muse Spark 1.3 charge more for long prompts?
Meta doesn't list a long-prompt surcharge for Muse Spark 1.3. Its pricing note says: Contributor mode (trains on your data): $0.10 in, $0.20 out.
Is Muse Spark 1.3 cheaper than GPT-6.1 Terra?
No. A medium month (20M input and 5M output tokens) costs $46.25 on Muse Spark 1.3 and $45.00 on GPT-6.1 Terra at list price. On Code Arena, Muse Spark 1.3 ranks #14 and GPT-6.1 Terra #11.
How does Muse Spark 1.3 rank on LMArena?
On Code Arena it is #14 of 50 models we price, with a relative score of 43 out of 100. It ranks on 8 of 8 boards we track.
What is a cheaper alternative to Muse Spark 1.3?
DeepSeek V4.1 Flash costs $0.30 in and $1.20 out per 1M tokens, about 3.8x less blended, and scores 46 on Code Arena against 43 for Muse Spark 1.3.
Where does this Muse Spark 1.3 price come from?
From Meta's official pricing page, which we check every day. This page was last checked Oct 29, 2026.