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.
1M128k
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.
$2.00—
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.
$10.00—
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—
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.
$2.00Amazon Bedrock—
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
$10.00Amazon Bedrock—
$900Anthropic list price—
These models have no shared benchmark scores.
Overview
CompanyAnthropicSpaceXSI
Release dateJun 30 2026Feb 17 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude Sonnet 5 and Grok 3 mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only Claude Sonnet 5 has a verified first-party API price: $2.00 per million input tokens and $10.00 per million output tokens. No pay-as-you-go API rate is tracked for Grok 3 mini. Grok 3 mini shipped 498 days before Claude Sonnet 5, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Claude Sonnet 5) vs 128k (Grok 3 mini).

Direct benchmark comparisons are unavailable — Claude Sonnet 5 and Grok 3 mini don't publish scores on any of the same benchmarks.