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Specifications
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
1M1M
API pricingUSD per 1M tokens · lower wins
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it.
$8.00—
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one.
$40.00—
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again.
$0.20—
$3,600Anthropic list price—
Benchmarks
Humanity's Last Exam · with toolsMultidisciplinary reasoning — Humanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better.
74.2%45.8%
Overview
CompanyAnthropicGoogle
Release dateNov 9 2026Nov 18 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude Fable 5.2 leads Gemini 3.0 Pro on 1 of the 1 benchmark they both report (Humanity's Last Exam). Only Claude Fable 5.2 has a verified first-party price for an available API: $8.00 per million input tokens and $40.00 per million output tokens. No currently available pay-as-you-go API rate is tracked for Gemini 3.0 Pro. Gemini 3.0 Pro shipped 356 days before Claude Fable 5.2, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Claude Fable 5.2) vs 1M (Gemini 3.0 Pro).

On Humanity's Last Exam · with tools, Claude Fable 5.2 leads at 74.2% vs Gemini 3.0 Pro at 45.8%.