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.
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.
$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$0.02OpenInference
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$0.18Decart
$2,250Anthropic list price$21.48Baidu · fp8
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.
83%57%
Terminal-Bench 2.1Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better.
66.1%90.6%
CyberGymCybersecurity — Tests the AI on cybersecurity challenges — finding and exploiting software weaknesses inside a safe sandbox. Higher is better.
73.1%88.1%
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%36.8%
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.
54.7%63.9%
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better.
94.2%90.9%
Overview
CompanyAnthropicDeepSeek
Release dateApr 16 2026Sep 10 2026
AccessClosedOpen Weight
Model detailsView modelView model

Frequently asked questions

Claude Opus 4.7 and DeepSeek-V4.1-Flash are evenly matched across the 6 benchmarks they both report. 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. Claude Opus 4.7 shipped 147 days before DeepSeek-V4.1-Flash, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Claude Opus 4.7) vs 1M (DeepSeek-V4.1-Flash). Claude Opus 4.7 is closed, while DeepSeek-V4.1-Flash is open weight.

On BullshitBench v2, Claude Opus 4.7 leads at 83% vs DeepSeek-V4.1-Flash at 57%. On Terminal-Bench 2.1, DeepSeek-V4.1-Flash leads at 90.6% vs Claude Opus 4.7 at 66.1%. On CyberGym, DeepSeek-V4.1-Flash leads at 88.1% vs Claude Opus 4.7 at 73.1%. On Humanity's Last Exam · no tools, Claude Opus 4.7 leads at 46.9% vs DeepSeek-V4.1-Flash at 36.8%. On Humanity's Last Exam · with tools, DeepSeek-V4.1-Flash leads at 63.9% vs Claude Opus 4.7 at 54.7%. On GPQA Diamond, Claude Opus 4.7 leads at 94.2% vs DeepSeek-V4.1-Flash at 90.9%.