Gemini 2.5 Flash vs GPT-4o mini: which is better?

Gemini 2.5 Flash leads on combined benchmark scores (85.9 vs 79.8) across general knowledge, coding, and math, as of 2026-07-27.

Which is cheaper, Gemini 2.5 Flash or GPT-4o mini?

GPT-4o mini is cheaper on a typical API workload, at roughly 3.1x lower cost than the alternative at published per-token rates.

Gemini 2.5 Flash vs GPT-4o mini

Gemini 2.5 Flash leads on benchmarks; GPT-4o mini is cheaper to run, about 3.1× less.

Updated 2026-07-27

Gemini 2.5 Flash

Google · Closed

85.9

Combined index

Leads

GPT-4o mini

OpenAI · Closed

79.8

Combined index

Benchmarks

General knowledge (MMLU)

87.5

Coding

87.2

Math

89.2

70.2

API pricing

$0.3 Input / 1M $0.15

$2.5 Output / 1M $0.6

$18.5 Monthly, est. $6.0

Monthly estimate assumes 20M input + 5M output tokens. Prices marked ~ are representative hosted rates for open-weight models and vary by provider. Run your own numbers in the cost calculator.

Gemini 2.5 Flash costs → GPT-4o mini costs → Full leaderboard → All comparisons →