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. | 0.5B/1.8B/4B/7B/14B/72B | — |
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. | 32k | 2M |
| Overview | ||
| Company | Qwen | SpaceXSI |
| Release date | Feb 4 2024 | Sep 19 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
Qwen1.5vsClaude Haiku 5.5Grok 4 FastvsClaude Haiku 5.5Qwen1.5vsGPT-6.1 SolGrok 4 FastvsGPT-6.1 SolQwen1.5vsGemini 4 ArgonGrok 4 FastvsGemini 4 ArgonQwen1.5vsMuse Spark OpenGrok 4 FastvsMuse Spark OpenQwen1.5vsDeepSeek-V4.1-Flash-1017Grok 4 FastvsDeepSeek-V4.1-Flash-1017Qwen1.5vsMistral Large 4Grok 4 FastvsMistral Large 4Frequently asked questions
Qwen1.5 and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen1.5 shipped 593 days before Grok 4 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 32k (Qwen1.5) vs 2M (Grok 4 Fast). Qwen1.5 is open weight, while Grok 4 Fast is closed.
Direct benchmark comparisons are unavailable — Qwen1.5 and Grok 4 Fast don't publish scores on any of the same benchmarks.