Compare AI models
| Specifications | ||
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. | 9k | 400k |
| 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 | Anthropic | OpenAI |
| Release date | Mar 14 2023 | Dec 18 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Claude 1vsGemini 4 CarbonGPT-5.2-CodexvsGemini 4 CarbonClaude 1vsMuse EmberGPT-5.2-CodexvsMuse EmberClaude 1vsGrok 4.7GPT-5.2-CodexvsGrok 4.7Claude 1vsDeepSeek-V4.1-Flash-1017GPT-5.2-CodexvsDeepSeek-V4.1-Flash-1017Claude 1vsMistral Large 4GPT-5.2-CodexvsMistral Large 4Claude 1vsKimi K3.1 ProGPT-5.2-CodexvsKimi K3.1 ProFrequently asked questions
Claude 1 and GPT-5.2-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 1 shipped 1010 days before GPT-5.2-Codex, so benchmark comparisons should account for the intervening progress.
Context windows are 9k (Claude 1) vs 400k (GPT-5.2-Codex).
Direct benchmark comparisons are unavailable — Claude 1 and GPT-5.2-Codex don't publish scores on any of the same benchmarks.