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 third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.042Darkbloom | $2.00OpenAI |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $0.22Darkbloom | $8.00OpenAI |
| 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. | 25% | 26% |
| Overview | ||
| Company | OpenAI | |
| Release date | Apr 2 2026 | Apr 16 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Frequently asked questions
o3 leads Gemma 4 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 Gemma 4. o3 shipped 351 days before Gemma 4, so benchmark comparisons should account for the intervening progress.
Gemma 4 is open weight, while o3 is closed.
On BullshitBench v2, o3 leads at 26% vs Gemma 4 at 25%.