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. | — | 397B |
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. | 400k | 1M |
| 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. | — | $0.40 |
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. | — | $2.40 |
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. | $1.25Azure | $0.26Alibaba |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $10.00Azure | $1.56Alibaba |
| $750Azure | $130Alibaba | |
| Overview | ||
| Company | OpenAI | Qwen |
| Release date | Nov 19 2025 | Feb 16 2026 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
GPT-5.1-Codex-MaxvsClaude Haiku 5.5Qwen3.5-PlusvsClaude Haiku 5.5GPT-5.1-Codex-MaxvsGemini 4 ArgonQwen3.5-PlusvsGemini 4 ArgonGPT-5.1-Codex-MaxvsMuse Spark OpenQwen3.5-PlusvsMuse Spark OpenGPT-5.1-Codex-MaxvsGrok 4.7Qwen3.5-PlusvsGrok 4.7GPT-5.1-Codex-MaxvsDeepSeek-V4.1-Flash-1017Qwen3.5-PlusvsDeepSeek-V4.1-Flash-1017GPT-5.1-Codex-MaxvsMistral Large 4Qwen3.5-PlusvsMistral Large 4Frequently asked questions
GPT-5.1-Codex-Max and Qwen3.5-Plus don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only Qwen3.5-Plus has a verified first-party API price: $0.40 per million input tokens and $2.40 per million output tokens. No pay-as-you-go API rate is tracked for GPT-5.1-Codex-Max. GPT-5.1-Codex-Max shipped 89 days before Qwen3.5-Plus, so benchmark comparisons should account for the intervening progress.
Context windows are 400k (GPT-5.1-Codex-Max) vs 1M (Qwen3.5-Plus).
Direct benchmark comparisons are unavailable — GPT-5.1-Codex-Max and Qwen3.5-Plus don't publish scores on any of the same benchmarks.