Model Price Index
Updated 2026-07-14 · Changelog

Claude Opus 4.8 vs Gemini 3.1 Pro

Comparison of Claude Opus 4.8, Gemini 3.1 Pro
per 1M tokensAnthropicClaude Opus 4.8GoogleGemini 3.1 Pro
Input$5.00$2.00
Output$25.00$12.00
Cache Read$0.50$0.20
Cache Write$6.25
Est / Month*$825.00$380.00
Headline price bracket≤200K input tokens
API Model IDclaude-opus-4-8gemini-3.1-pro-preview
Context Window1M tokens1M tokens
Max Output128K tokens65K tokens
modalitiestext · imagetext · image · audio · video
capabilitiestool-use · streaming · json-mode · vision · code · extended-thinkingtool-use · streaming · json-mode · vision · code · extended-thinking

Text / Chat · cheapest per row in red

* At the reference workload: 2,000 input / 1,250 output tokens per request, 20,000 requests per month. Excludes cache writes and batch discounts.

Base input-token bracket (shown in the headline price bracket row); rates step above it — see the model page for the full schedule.