GPT-5.2-Codex
openai/gpt-5.2-codex-20260114
OpenAI's GPT-5.2-Codex processes text and image inputs to generate text output, with a context length of 400 000 tokens. The model supports tool usage and reasoning, is not released with open weights, and costs $1.75 per M input tokens and $14 per M output tokens. It was released on 2026‑01‑14.
- tool use
- structured outputs
- reasoning
At a glance
provideropenai
releasedJan 14, 2026
context400K
input / M$1.75
Specifications
What the API gives you
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input price
- $1.75 / 1M tokens
- Output price
- $14 / 1M tokens
- Cache read
- $0.17 / 1M tokens
- Modalities
- text, image → text
- Knowledge cutoff
- —
- Released
- Jan 14, 2026
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. This means the available task-specific evidence did not support a ranking yet—not that the model was reviewed and rejected.
Measured evidence
Public benchmark record
- LMArena WebDev
- 1334 Elo2026-07-16
- LMArena WebDev
- 1334 Elo2026-07-20
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.