Gemini 3.8 Flash vs Muse Spark 1.1
Head-to-head technical comparison of intelligence, capabilities, and API pricing.
Which should you use?
Gemini 3.8 Flash leads on the composite index by 1.2 points (93.5 vs 92.3).
Their Arena Elo differs by only 2 points, inside the confidence intervals the public board reports, so human preference does not separate them.
Cost is the sharper difference: Muse Spark 1.1 is 1.7x the input price of Gemini 3.8 Flash ($1.25 against $0.75 per 1M), so at volume the choice is usually decided by budget rather than benchmarks.
Pick Gemini 3.8 Flash when
- Higher composite index — 93.5 against 92.3, a gap of 1.2 points.
- Stronger on MMLU-Pro: 93.2% against 91.9%.
- Cheaper input tokens — $0.75 against $1.25 per 1M, so Muse Spark 1.1 costs 1.7x as much to feed.
- Better value per point of measured capability: $0.008 per index point against $0.014.
Pick Muse Spark 1.1 when
On these measures Muse Spark 1.1 does not lead Gemini 3.8 Flash anywhere, so pick it only for reasons outside this table — an existing integration, a region, or a contract.
Value per point of measured capability, at list input pricing: Gemini 3.8 Flash $0.008 · Muse Spark 1.1 $0.014 per index point. Run your own token mix through the token cost calculator — a comparison at list price ignores caching and batch discounts, which move real bills more than this gap does.
Where these numbers come from
Figures as of 2026-09-07. Arena Elo and pricing are read from the public board and each vendor's own pricing page; see the full leaderboard for all 34 models and which columns are measured rather than estimated, or the benchmark matrix for scores benchmark by benchmark.