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/1.5B/3B/7B/14B/32B/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. | 128k | 2M |
| API pricingUSD per 1M tokens · lower wins | ||
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. | $0.36DeepInfra | — |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $0.40DeepInfra | — |
| $92.00DeepInfra · fp8 | — | |
| 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. | — | 19% |
| Overview | ||
| Company | Qwen | SpaceXSI |
| Release date | Sep 19 2024 | Nov 19 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
Qwen2.5vsClaude Haiku 5.5Grok 4.1 FastvsClaude Haiku 5.5Qwen2.5vsGPT-6.1 SolGrok 4.1 FastvsGPT-6.1 SolQwen2.5vsGemini 4 ArgonGrok 4.1 FastvsGemini 4 ArgonQwen2.5vsMuse Spark OpenGrok 4.1 FastvsMuse Spark OpenQwen2.5vsDeepSeek-V4.1-Flash-1017Grok 4.1 FastvsDeepSeek-V4.1-Flash-1017Qwen2.5vsMistral Large 4Grok 4.1 FastvsMistral Large 4Frequently asked questions
Qwen2.5 and Grok 4.1 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen2.5 shipped 426 days before Grok 4.1 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (Qwen2.5) vs 2M (Grok 4.1 Fast). Qwen2.5 is open weight, while Grok 4.1 Fast is closed.
Direct benchmark comparisons are unavailable — Qwen2.5 and Grok 4.1 Fast don't publish scores on any of the same benchmarks.