Compare AI models
| 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 |
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. | — | $8.00 |
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. | — | $0.50 |
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. | $0.50DeepInfra | $2.00OpenAI |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $2.15DeepInfra | $8.00OpenAI |
| $208DeepInfra · fp4 | $800OpenAI list price | |
| 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. | 8% | 26% |
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | May 28 2025 | Apr 16 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Frequently asked questions
o3 leads DeepSeek R1-0528 on 1 of the 1 benchmark they both report (BullshitBench v2). Only o3 has a verified first-party API price: $2.00 per million input tokens and $8.00 per million output tokens. No pay-as-you-go API rate is tracked for DeepSeek R1-0528. o3 shipped 42 days before DeepSeek R1-0528, so benchmark comparisons should account for the intervening progress.
DeepSeek R1-0528 is open weight, while o3 is closed.
On BullshitBench v2, o3 leads at 26% vs DeepSeek R1-0528 at 8%.