GPT-5.2 Codex
Highly capable coding model optimized for long-horizon, agentic coding tasks with configurable reasoning and strong codebase awareness.
GPT-5.2 Codex at a glance
Context window
400K tokens
Input price
$1.75
per 1M tokens
Output price
$14
per 1M tokens
Why use GPT-5.2 Codex
Strengths, benchmarks, and where GPT-5.2 Codex fits in your team's workflow.
1. Optimized for Long-Horizon Coding Tasks
- OpenAI describes GPT-5.2 Codex as a highly intelligent coding model built for long-horizon, agentic coding work.
- Well suited to planning, refactoring, debugging, and multi-step implementation flows inside real codebases.
2. Adjustable Reasoning for Coding Work
- Supports configurable reasoning effort from low to xhigh depending on speed and quality needs.
- Accepts both text and image inputs while producing text output.
3. Large Context + Long Output
- 400 k token context window supports broad repository understanding and larger working sets.
- Allows up to 128 k output tokens for longer patches, code generation, and technical explanations.
4. Up-to-Date Model Snapshot
- Knowledge cut-off of Aug 31 2025 keeps it current with newer tools and frameworks.
- Supports streaming, function calling, and structured outputs for tool-driven coding workflows.
Power your team with GPT-5.2 Codex
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-5.2 Codex - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with GPT-5.2 Codex as the engine. No code, no deployment.
Give GPT-5.2 Codex your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so GPT-5.2 Codex works with real context, not generic answers.
Automate recurring tasks
Schedule GPT-5.2 Codex to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-5.2 Codex - connected to the tools you already use.
Where teams use GPT-5.2 Codex
See how teams put GPT-5.2 Codex to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with GPT-5.2 Codex doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by GPT-5.2 Codex.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
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Build internal AI tools with GPT-5.2 Codex
Describe the tool your team needs and get a working app powered by GPT-5.2 Codex - with a built-in database, team access, and integrations. No code, no deployment.