Home / Compare / Claude Haiku 4.5 vs Gemini 3.1 Pro Preview

Claude Haiku 4.5 vs Gemini 3.1 Pro Preview

For a typical chat reply (2,000 tokens in, 400 out), Gemini 3.1 Pro Preview costs 2.2× as much as Claude Haiku 4.5: $8.80 against $4.00 per 1,000 requests at list price on 2026-09-28.

Claude Haiku 4.5Gemini 3.1 Pro Preview
Input, per 1M tokens$1.00$2.00
Output, per 1M tokens$5.00$12.00
Context window200K1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$0.65$1.32
Chat reply (2,000 in, 400 out), per 1,000$4.00$8.80
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$10.50$22.00
Confidence signalnono
Tool callingyesyes
BANKING77, correct of 400301not measured

Which one should carry your traffic?

If Claude Haiku 4.5 answers your requests as well as Gemini 3.1 Pro Preview, moving that traffic saves 55% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Claude Haiku 4.5 does not expose a confidence signal through OpenRouter, so Gimbix would test it as a full replacement rather than a first answer.

Claude Haiku 4.5 profile · Gemini 3.1 Pro Preview profile · Measure it on your traffic