1h ago

Gemini 3.5 Flash Costs Twice as Much to Run as Predecessor

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Original post
OPTheo - t3.gg#1829Theo - t3.gg@THEO

Gemini 3.5 Flash is a really interesting release. It's super fast and surprisingly smart. It's also more expensive (3x more per token) and super token hungry. The result - it costs 2x more to run than Gemini 3.1 Pro on similar tasks. It's more expensive than GPT-5.5 Medium.

4:21 PM · May 19, 2026 View on X
REPLYTheo - t3.gg#1829Theo - t3.gg@THEO

The cost to performance chart is the most interesting.

3.5 Flash is "more expensive" and "dumber" than gpt-5.5 on medium

gpt-5.5-medium: 22m tokens, $1,199, 57 points gemini-3.5-flash: 73m tokens, $1,522, 55 points

Theo - t3.ggTheo - t3.gg@theo

Gemini 3.5 Flash is a really interesting release. It's super fast and surprisingly smart. It's also more expensive (3x more per token) and super token hungry. The result - it costs 2x more to run than Gemini 3.1 Pro on similar tasks. It's more expensive than GPT-5.5 Medium.

11:21 PM · May 19, 2026 · 31.9K Views
11:25 PM · May 19, 2026 · 7.2K Views