Claude Fable 5.1 vs Muse Spark 1.3: API pricing
As of Oct 14, 2026, Claude Fable 5.1 costs $10.00 input / $50.00 output per million tokens from Anthropic, and Muse Spark 1.3 costs $1.25 / $4.25 from Meta. For 10M input and 2M output tokens a month, Claude Fable 5.1 comes to $200.00 and Muse Spark 1.3 to $21.00, so Muse Spark 1.3 is 90% cheaper than Claude Fable 5.1. On LMArena, Claude Fable 5.1 scores higher, 1510 against 1490.
Your monthly cost at the official price
Claude Fable 5.1: $200.00
Muse Spark 1.3: $21.00cheaper
| Detail |  Claude Fable 5.1 |  Muse Spark 1.3 |
|---|---|---|
| Maker | Anthropic | Meta |
| Official input / output | $10.00 / $50.00per million tokens | $1.25 / $4.25per million tokens |
| Cached input | $0.25 | $0.15 |
| Cheapest seller | $10.00 / $50.00Amazon Bedrock Converse | $1.25 / $4.25Meta |
| Sellers | 5 | 2 |
| Context | 1M | 1.05M |
| LMArena overall | 1510 · #3 | 1490 · #12 |
| LMArena coding | 1529 · #8 | 1512 · #13 |
| Features |
Every seller's price: Claude Fable 5.1 · Muse Spark 1.3
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Prices in USD from LiteLLM and models.dev, checked daily; arena scores from LMArena (CC BY 4.0). Confirm on the seller's pricing page before you rely on a number.