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. | 1M | 200k |
| 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. | $0.30 | $15.00 |
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. | $2.50 | $60.00 |
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. | $0.03 | $7.50 |
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. | $0.15Google AI Studio | $15.00OpenAI |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $1.25Google AI Studio | $60.00OpenAI |
| $185Google list price | $6,000OpenAI list price | |
| These models have no shared benchmark scores. | ||
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. | 19% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 75.7% |
| Overview | ||
| Company | OpenAI | |
| Release date | Apr 17 2025 | Dec 5 2024 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Gemini 2.5 FlashvsClaude Haiku 5.5o1vsClaude Haiku 5.5Gemini 2.5 FlashvsMuse Spark Openo1vsMuse Spark OpenGemini 2.5 FlashvsGrok 4.7o1vsGrok 4.7Gemini 2.5 FlashvsDeepSeek-V4.1-Flash-1017o1vsDeepSeek-V4.1-Flash-1017Gemini 2.5 FlashvsMistral Large 4o1vsMistral Large 4Gemini 2.5 FlashvsKimi K3o1vsKimi K3Frequently asked questions
Gemini 2.5 Flash and o1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 2.5 Flash is cheaper on both input and output: $0.30 vs $15.00 per million input tokens, and $2.50 vs $60.00 per million output tokens. o1 shipped 133 days before Gemini 2.5 Flash, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Gemini 2.5 Flash) vs 200k (o1).
Direct benchmark comparisons are unavailable — Gemini 2.5 Flash and o1 don't publish scores on any of the same benchmarks.