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Specifications
Context window
1M—
API pricing
Input price
$2.00—
Output price
$10.00—
Cached input price
$0.20—

These models have no shared benchmark scores.

Overview
CompanyAnthropicGoogle
Release dateSep 28 2026Jan 30 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude Sonnet 5.5 and Gemini 2.0 Flash don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only Claude Sonnet 5.5 has a verified first-party API price: $2.00 per million input tokens and $10.00 per million output tokens. No pay-as-you-go API rate is tracked for Gemini 2.0 Flash. Gemini 2.0 Flash shipped 606 days before Claude Sonnet 5.5, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — Claude Sonnet 5.5 and Gemini 2.0 Flash don't publish scores on any of the same benchmarks.