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. | 128k | 1M |
| 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. | $2.50 | — |
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. | $10.00 | — |
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. | $1.25 | — |
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. | $2.50Azure | — |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $10.00Azure | — |
| $1,000OpenAI 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. | 12% | — |
LiveCodeBenchCompetitive coding — Coding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | — | 57% |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 49.9% | — |
| Overview | ||
| Company | OpenAI | SpaceXSI |
| Release date | May 13 2024 | Feb 17 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
GPT-4ovsClaude Haiku 5.5Grok 3vsClaude Haiku 5.5GPT-4ovsGemini 4 CarbonGrok 3vsGemini 4 CarbonGPT-4ovsMuse Spark OpenGrok 3vsMuse Spark OpenGPT-4ovsDeepSeek-V4.1-Flash-1017Grok 3vsDeepSeek-V4.1-Flash-1017GPT-4ovsMistral Large 4Grok 3vsMistral Large 4GPT-4ovsKimi K3.1 ProGrok 3vsKimi K3.1 ProFrequently asked questions
GPT-4o and Grok 3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only GPT-4o has a verified first-party price for an available API: $2.50 per million input tokens and $10.00 per million output tokens. No currently available pay-as-you-go API rate is tracked for Grok 3. GPT-4o shipped 280 days before Grok 3, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (GPT-4o) vs 1M (Grok 3).
Direct benchmark comparisons are unavailable — GPT-4o and Grok 3 don't publish scores on any of the same benchmarks.