GPT-5.2 Codex
openai/gpt-5.2-codex- OpenAI
- Family · GPT-5 Codex
- Released 11 Dec 2025
- Text · Image → Text
- Reasoning · adjustable
- Tools · JSON · Vision
Spec & list price
Context391K
Max output128K
Input / 1M$1.75
Output / 1M$14.008× input
Scores · standing
Intelligence28.5#72/490
Usage
Tokens / day48.1M▲ 78% 7d
Usage rank#343
Requests / day2.5K
Tool calls / req0.28
Per request · 30 days
Avg input12.8K0.9× median
Avg output4050.6× median
Cache hit83%1.2× median
Reasoning share50%0.9× median
Tool-call failures0.4%0.2× median
Consumption
Peak 434.0M 26 SepLow 15.2M 25 OctRank today #343
News & trends
News · latest from OpenAI
- GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at maxthenewstack.io · 2 Nov
- Chinese labs now target OpenAI's GPT-6 Astra for distillationfork.zone · 1 Nov
- GPT-6.1 Terrasimonwillison.net · 31 Oct
- GPT-5.6 Sol can beat Factorio on peaceful moderyanmadden.net · 31 Oct
Benchmarks
bar = share of the top score · Benchmark data: Artificial AnalysisSpeed · median across providers, latest day
Output speed#251/33445 tok/s1.5× slower than median
First token#2732.16 s2.1× longer than median
#15 cheapest of 18 with a similar score
Value
Intelligence Index
Blended price per 1M tokens (log)
Family progress
Intelligence Index
- Family releases32.5
Technical details
- Reasoning
- on · medium
- Tokenizer
- GPT
- Moderation
- none
Reasoning effort
- xhigh
- high
- medium · default
- low
Request parameters 10
- tools
- tool_choice
- response_format
- structured_outputs
- reasoning
- reasoning_effort
- include_reasoning
- max_completion_tokens
- seed
- verbosity
When to use
Best for
- Agentic coding across large repositories
- Multi-step tool use with long context
- Hard technical reasoning with high effort settings
- Terminal and command-line automation
Think twice for
- General chat and casual writing
- Self-hosting (closed weights)
- Budget-sensitive high-volume tasks
Research papers
Same family
GPT-5 Codex- 32.5
- 24.9
- 23.7
Alternatives
other vendors · similar capability- T25.0
- 30.1
- 29.7
- 27.9
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