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. | 671B | — |
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 | 400k |
| 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. | $0.27SiliconFlow | — |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | $0.41SiliconFlow | — |
| $74.50SiliconFlow · 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. | — | 45% |
Next.js EvalsNext.js coding — Vercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | — | 46% |
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Sep 29 2025 | Dec 18 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
DeepSeek V3.2 ExpvsClaude Fable 5.2GPT-5.2-CodexvsClaude Fable 5.2DeepSeek V3.2 ExpvsGemini 4 CarbonGPT-5.2-CodexvsGemini 4 CarbonDeepSeek V3.2 ExpvsMuse EmberGPT-5.2-CodexvsMuse EmberDeepSeek V3.2 ExpvsGrok 4.7GPT-5.2-CodexvsGrok 4.7DeepSeek V3.2 ExpvsMistral Large 4GPT-5.2-CodexvsMistral Large 4DeepSeek V3.2 ExpvsKimi K3.1 ProGPT-5.2-CodexvsKimi K3.1 ProFrequently asked questions
DeepSeek V3.2 Exp and GPT-5.2-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3.2 Exp shipped 80 days before GPT-5.2-Codex, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (DeepSeek V3.2 Exp) vs 400k (GPT-5.2-Codex). DeepSeek V3.2 Exp is open weight, while GPT-5.2-Codex is closed.
Direct benchmark comparisons are unavailable — DeepSeek V3.2 Exp and GPT-5.2-Codex don't publish scores on any of the same benchmarks.