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GPT-5.2 Pro

OpenAI · GPT-5

Previous premium GPT-5.2 reasoning tier now mainly useful for compatibility after GPT-5.5 Pro became OpenAI's newer premium route.

Part of GPT family · Other versions: GPT-5.6 Luna , GPT-5.6 Terra , GPT-5.6 Sol , GPT-5.5 Pro , GPT-5.5 , GPT-Rosalind , GPT-5.4 mini , GPT-5.4 nano , GPT-5.4 Pro , GPT-5.4 , GPT-5.3 , GPT-5.3-Codex , GPT-5.2-Codex , GPT-5.2 , GPT-5-Codex , GPT-5 mini , GPT-5 nano , GPT-5 , GPT-4.1 , GPT-4o mini Transcribe , GPT-4o mini TTS , GPT-4o Transcribe , Computer Use Preview , GPT-4o mini , GPT-4o
Type
language
Context
400K tokens
Max Output
128K tokens
Status
legacy
Input
$21/1M tok
Output
$168/1M tok
API Access
Yes
License
proprietary
frontier reasoning high-accuracy coding analysis tool-use
Released December 2025 · Updated June 8, 2026

Overview

Freshness note: Model capabilities, limits, and pricing can change quickly. This profile is a point-in-time snapshot last verified on June 8, 2026.

GPT-5.2 Pro is the previous premium compute-heavy route in the GPT-5.2 branch. OpenAI still documents it as an API model, but current fresh-build guidance now points premium reasoning work toward newer GPT-5.5 Pro and GPT-5.4 Pro routes. Keep this page as a compatibility and migration reference, not as the first model to evaluate for new high-precision workloads.

Capabilities

GPT-5.2 Pro is suited for complex analytical tasks, difficult engineering problem-solving, and high-stakes decision-support workflows where deeper reasoning and output quality matter more than latency or throughput economics. That value is now mostly relevant for teams with existing prompts, evaluations, or routing policies built around GPT-5.2 behavior.

Technical Details

OpenAI’s current model card lists GPT-5.2 Pro with a 400K context window, 128K max output, image input support, and Responses API availability. It is designed as the top-quality tier in the GPT-5.2 line rather than a cost-optimized variant.

Pricing & Access

Published API pricing (per 1M tokens):

  • Input: $21.00
  • Output: $168.00

OpenAI does not list cached input pricing for this tier. This price band makes GPT-5.2 Pro best reserved for compatibility-sensitive selective routing on high-value tasks.

Best Use Cases

Use GPT-5.2 Pro selectively for existing decision-ready memo, difficult engineering review, regulated-analysis, or escalation-agent workflows that already depend on it. New premium-routing experiments should include GPT-5.5 Pro first.

Comparisons

  • GPT-5.5 Pro (OpenAI): Newer premium reasoning route for fresh long-running Responses workflows.
  • GPT-5.4 Pro (OpenAI): Newer premium frontier sibling and a better migration comparison than standard GPT-5.2.
  • GPT-5.2 (OpenAI): Better default unless the extra precision is worth a large premium.
  • Claude Opus 4.6 (Anthropic): Contemporary premium alternative for high-quality reasoning work.