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.
$2.00$1.50
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$7.50
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.
$0.10$0.075
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.
$1.00Google AI Studio—
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
$5.00Google AI Studio—
$900Google list price$675Google list price
Benchmarks
Terminal-Bench-Science 0.1Agentic scientific computing — The same command-line setup as Terminal-Bench, pointed at scientific work: the AI has to drive research tooling and computational workflows through to a result, rather than administer a machine. Version 0.1 is the first release of the task set, and scores run lower than on the general board. Higher is better.
64.8%51.4%
OSWorld 2.1 · offlineAgentic computer use — Can the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Version 2.1, in its offline setting. Scores are not comparable with version 2.0. Higher is better.
81.5%77.6%
Vending-Bench 2 (USD)Business simulation — ending bank balance in US dollars in Andon Labs’ vending-business simulation; higher is better
1648414549
Chartography · no toolsChart tasks — The same chart-centred test with no tools: the AI has to read each chart unaided. Scores run far lower than the with-tools version, so read the two as separate tests. Higher is better.
72.5%66.6%
Overview
CompanyGoogleGoogle
Release dateOct 28 2026Nov 12 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Gemini 4 Carbon leads Gemini 4 Hydrogen on 4 of the 4 benchmarks they both report (Terminal-Bench-Science 0.1, OSWorld 2.1, Vending-Bench 2 (USD), Chartography). Gemini 4 Hydrogen is cheaper on both input and output: $1.50 vs $2.00 per million input tokens, and $7.50 vs $10.00 per million output tokens. Gemini 4 Carbon shipped 15 days before Gemini 4 Hydrogen, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Gemini 4 Carbon) vs 1M (Gemini 4 Hydrogen).

On Terminal-Bench-Science 0.1, Gemini 4 Carbon leads at 64.8% vs Gemini 4 Hydrogen at 51.4%. On OSWorld 2.1 · offline, Gemini 4 Carbon leads at 81.5% vs Gemini 4 Hydrogen at 77.6%. On Vending-Bench 2 (USD), Gemini 4 Carbon leads at 16484 vs Gemini 4 Hydrogen at 14549. On Chartography · no tools, Gemini 4 Carbon leads at 72.5% vs Gemini 4 Hydrogen at 66.6%.