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. | — | $1.10 |
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. | — | $4.40 |
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. | — | $0.275 |
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. | — | $1.10OpenAI |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | — | $4.40OpenAI |
| — | $440OpenAI 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. | 10% | 8% |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 33.3% | — |
| Overview | ||
| Company | Anthropic | OpenAI |
| Release date | Mar 4 2024 | Apr 16 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Claude 3 HaikuvsGemini 4 Argono4-minivsGemini 4 ArgonClaude 3 HaikuvsMuse Wondero4-minivsMuse WonderClaude 3 HaikuvsGrok 4.7o4-minivsGrok 4.7Claude 3 HaikuvsDeepSeek-V4.1-Flasho4-minivsDeepSeek-V4.1-FlashClaude 3 HaikuvsMistral Large 4o4-minivsMistral Large 4Claude 3 HaikuvsKimi K3o4-minivsKimi K3Frequently asked questions
Claude 3 Haiku leads o4-mini on 1 of the 1 benchmark they both report (BullshitBench v2). Only o4-mini has a verified first-party API price: $1.10 per million input tokens and $4.40 per million output tokens. No pay-as-you-go API rate is tracked for Claude 3 Haiku. Claude 3 Haiku shipped 408 days before o4-mini, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
On BullshitBench v2, Claude 3 Haiku leads at 10% vs o4-mini at 8%.