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.
200k200k
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.
—$150.00
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.
—$600.00
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.
—$150.00OpenAI
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$600.00OpenAI
—$60,000OpenAI list price
These models have no shared benchmark scores.
Overview
CompanyAnthropicOpenAI
Release dateFeb 24 2025Mar 19 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude 3.7 Sonnet and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only o1-pro has a verified first-party API price: $150.00 per million input tokens and $600.00 per million output tokens. No pay-as-you-go API rate is tracked for Claude 3.7 Sonnet. Claude 3.7 Sonnet shipped 23 days before o1-pro, so benchmark comparisons should account for the intervening progress.

Context windows are 200k (Claude 3.7 Sonnet) vs 200k (o1-pro).

Direct benchmark comparisons are unavailable — Claude 3.7 Sonnet and o1-pro don't publish scores on any of the same benchmarks.