Compare AI models

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.
200k1M
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.
$3.00—
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.
$15.00—
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.
$0.30—
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page.
$3.00Amazon Bedrock$0.375Google AI Studio
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
$15.00Amazon Bedrock$1.875Google AI Studio
$1,350Anthropic list price$338Google
Benchmarks
BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better.
79%35%
ARC-AGI-2Abstract reasoning — Puzzle-style tests of abstract reasoning and pattern-finding — the kind of thing people find easy but AIs often struggle with. Higher is better.
13.6%84.6%
Overview
CompanyAnthropicGoogle
Release dateSep 29 2025Aug 13 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude Sonnet 4.5 and Gemini 3.7 Flash are evenly matched across the 2 benchmarks they both report (BullshitBench v2, ARC-AGI-2). Only Claude Sonnet 4.5 has a verified first-party price for an available API: $3.00 per million input tokens and $15.00 per million output tokens. No currently available pay-as-you-go API rate is tracked for Gemini 3.7 Flash. Claude Sonnet 4.5 shipped 318 days before Gemini 3.7 Flash, so benchmark comparisons should account for the intervening progress.

Context windows are 200k (Claude Sonnet 4.5) vs 1M (Gemini 3.7 Flash).

On BullshitBench v2, Claude Sonnet 4.5 leads at 79% vs Gemini 3.7 Flash at 35%. On ARC-AGI-2, Gemini 3.7 Flash leads at 84.6% vs Claude Sonnet 4.5 at 13.6%.