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.
$1.50$1.25
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.
$7.50$4.25
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.
$0.075$0.15
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.
—$1.25Google
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$4.25Google
$675Google list price$463Meta list price
These models have no shared benchmark scores.
Overview
CompanyGoogleMeta
Release dateNov 12 2026Sep 2 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Gemini 4 Hydrogen and Muse Spark 1.3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Muse Spark 1.3 is cheaper on both input and output: $1.25 vs $1.50 per million input tokens, and $4.25 vs $7.50 per million output tokens. Muse Spark 1.3 shipped 71 days before Gemini 4 Hydrogen, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Gemini 4 Hydrogen) vs 1M (Muse Spark 1.3).

Direct benchmark comparisons are unavailable — Gemini 4 Hydrogen and Muse Spark 1.3 don't publish scores on any of the same benchmarks.