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.
1M400k
API pricingUSD per 1M tokens · lower wins
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.
$0.375Google AI Studio—
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
$1.875Google AI Studio—
$338Google—
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.
35%45%
Overview
CompanyGoogleOpenAI
Release dateAug 13 2026Dec 18 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

GPT-5.2-Codex leads Gemini 3.7 Flash on 1 of the 1 benchmark they both report (BullshitBench v2). GPT-5.2-Codex shipped 238 days before Gemini 3.7 Flash, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Gemini 3.7 Flash) vs 400k (GPT-5.2-Codex).

On BullshitBench v2, GPT-5.2-Codex leads at 45% vs Gemini 3.7 Flash at 35%.