Compare AI models

Specifications
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view.
1M—
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.
$5.00—
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.
$25.00—
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.
$0.50—
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.
$5.00Amazon Bedrock$0.15DeepSeek
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
$25.00Amazon Bedrock$0.60DeepSeek
$2,250Anthropic list price$60.00DeepSeek
Benchmarks
Humanity's Last Exam · no toolsMultidisciplinary reasoning — Humanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better.
46.9%42.6%
Overview
CompanyAnthropicDeepSeek
Release dateApr 16 2026Oct 17 2026
AccessClosedOpen Weight
Model detailsView modelView model

Frequently asked questions

Claude Opus 4.7 leads DeepSeek-V4.1-Flash-1017 on 1 of the 1 benchmark they both report (Humanity's Last Exam). Only Claude Opus 4.7 has a verified first-party API price: $5.00 per million input tokens and $25.00 per million output tokens. No pay-as-you-go API rate is tracked for DeepSeek-V4.1-Flash-1017. Claude Opus 4.7 shipped 184 days before DeepSeek-V4.1-Flash-1017, so benchmark comparisons should account for the intervening progress.

Claude Opus 4.7 is closed, while DeepSeek-V4.1-Flash-1017 is open weight.

On Humanity's Last Exam · no tools, Claude Opus 4.7 leads at 46.9% vs DeepSeek-V4.1-Flash-1017 at 42.6%.