Compare AI models
| API pricingUSD per 1M tokens · lower wins · base tier | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $1.10 | $1.25 |
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 | $2.50 |
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. | $0.55 | $0.20 |
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 | $375SpaceXSI list price | |
| Benchmarks | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 49.3% | 76.7% |
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. | — | 56% |
ARC-AGI-2Abstract reasoning — Puzzle-style tests of abstract reasoning and pattern-finding — the kind of thing people find easy but AIs often struggle with. Higher is better. | — | 53.3% |
| Overview | ||
| Company | OpenAI | SpaceXSI |
| Release date | Jan 31 2025 | Feb 17 2026 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
o3-minivsClaude Haiku 5.5Grok 4.20 BetavsClaude Haiku 5.5o3-minivsGemini 4 ArgonGrok 4.20 BetavsGemini 4 Argono3-minivsMuse Spark OpenGrok 4.20 BetavsMuse Spark Openo3-minivsDeepSeek-V4.1-FlashGrok 4.20 BetavsDeepSeek-V4.1-Flasho3-minivsMistral Large 4Grok 4.20 BetavsMistral Large 4o3-minivsKimi K3Grok 4.20 BetavsKimi K3Frequently asked questions
Grok 4.20 Beta leads o3-mini on 1 of the 1 benchmark they both report (SWE-Bench Verified). o3-mini is cheaper on input: $1.10 vs $1.25 per million tokens. Grok 4.20 Beta is cheaper on output: $2.50 vs $4.40 per million tokens. Figures are base-tier rates. o3-mini shipped 382 days before Grok 4.20 Beta, 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 SWE-Bench Verified, Grok 4.20 Beta leads at 76.7% vs o3-mini at 49.3%.