Last refreshed 2026-06-30. Next refresh: weekly.
Why use GPT-5.2 Codex on OpenRouter?
OpenRouter offers GPT-5.2 Codex with pay-as-you-go pricing at $1.75/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare GPT-5.2 Codex across 3 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: openai/gpt-5.2-codexopenai/gpt-5.2-codexRequest example
openai/gpt-5.2-codex.Gotchas
- Use provider model ID "openai/gpt-5.2-codex", not the LLMReference slug "gpt-5.2-codex".
Compare GPT-5.2 Codex Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Vercel AI Gateway | $1.75 | $14.00 |
| OpenAI API | $1.75 | $14.00 |
| OpenRouter | $1.75 | $14.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.75 |
| Output tokens | $14.00 |
Capabilities
About GPT-5.2 Codex
GPT-5.2-Codex is OpenAI's agentic coding model built on GPT-5.2, released December 18, 2025. Optimized for long-horizon professional software engineering tasks including large refactors, multi-file changes, and codebase migrations. Features context compaction for handling tasks exceeding a single context window, enhanced vision for interpreting screenshots, diagrams, and UI, and strengthened safeguards for defensive cybersecurity workflows. Available to paid ChatGPT users and via the Responses API.