Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | — | 314B |
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 | 8k |
| Overview | ||
| Company | OpenAI | SpaceXSI |
| Release date | Feb 27 2025 | Nov 3 2023 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
GPT-4.5vsClaude Haiku 5.5Grok‑1vsClaude Haiku 5.5GPT-4.5vsGemini 4 ArgonGrok‑1vsGemini 4 ArgonGPT-4.5vsMuse Spark OpenGrok‑1vsMuse Spark OpenGPT-4.5vsDeepSeek-V4.1-Flash-1017Grok‑1vsDeepSeek-V4.1-Flash-1017GPT-4.5vsMistral Large 4Grok‑1vsMistral Large 4GPT-4.5vsKimi K3Grok‑1vsKimi K3Frequently asked questions
GPT-4.5 and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 482 days before GPT-4.5, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (GPT-4.5) vs 8k (Grok‑1). GPT-4.5 is closed, while Grok‑1 is open weight.
Direct benchmark comparisons are unavailable — GPT-4.5 and Grok‑1 don't publish scores on any of the same benchmarks.