Compare AI models
| Specifications | ||
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 128k | 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. | $0.15 | $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. | $0.60 | $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. | $0.075 | $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. | $0.15Azure | $15.00OpenAI |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $0.60Azure | $60.00OpenAI |
| $60.00OpenAI list price | $6,000OpenAI list price | |
| Benchmarks | ||
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 40.2% | 75.7% |
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. | 2% | — |
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | Jul 18 2024 | Dec 5 2024 |
| Access | Closed | Closed |
| Model details | View model | View model |
Frequently asked questions
o1 leads GPT-4o mini on 1 of the 1 benchmark they both report (GPQA Diamond). GPT-4o mini is cheaper on both input and output: $0.15 vs $15.00 per million input tokens, and $0.60 vs $60.00 per million output tokens. GPT-4o mini shipped 140 days before o1, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (GPT-4o mini) vs 200k (o1).
On GPQA Diamond, o1 leads at 75.7% vs GPT-4o mini at 40.2%.