Gemini 3.8 Flash vs Muse Spark 1.3: API pricing
As of Oct 14, 2026, Gemini 3.8 Flash costs $0.75 input / $3.75 output per million tokens from Google, and Muse Spark 1.3 costs $1.25 / $4.25 from Meta. For 10M input and 2M output tokens a month, Gemini 3.8 Flash comes to $15.00 and Muse Spark 1.3 to $21.00, so Gemini 3.8 Flash is 29% cheaper than Muse Spark 1.3. On LMArena, Gemini 3.8 Flash scores higher, 1499 against 1490.
Your monthly cost at the official price
Gemini 3.8 Flash: $15.00cheaper
Muse Spark 1.3: $21.00
| Detail |  Gemini 3.8 Flash |  Muse Spark 1.3 |
|---|---|---|
| Maker | Meta | |
| Official input / output | $0.75 / $3.75per million tokens | $1.25 / $4.25per million tokens |
| Cached input | $0.075 | $0.15 |
| Cheapest seller | $0.75 / $3.75Google Vertex AI | $1.25 / $4.25Meta |
| Sellers | 3 | 2 |
| Context | 1.05M | 1.05M |
| LMArena overall | 1499 · #8 | 1490 · #12 |
| LMArena coding | 1507 · #17 | 1512 · #13 |
| Features |
Every seller's price: Gemini 3.8 Flash · 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.