# GPT-5 Pro (slim)

> GPT-5 Pro, a family of models by OpenAI, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+…

- Full: https://www.anchorterminal.com/tools/gpt-5-pro.md (~550 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/tools/gpt-5-pro.json · canonical https://www.anchorterminal.com/tools/gpt-5-pro
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

# GPT-5 Pro

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by OpenAI
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...

## Models (4)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| GPT-5.5 Pro | `openai/gpt-5.5-pro` | 2026-04 | 1.05M | $30 | $180 | tools, structured output, reasoning, file, image |
| GPT-5.4 Pro | `openai/gpt-5.4-pro` | 2026-03 | 1.05M | $30 | $180 | tools, structured output, reasoning, file, image |
| GPT-5.2 Pro | `openai/gpt-5.2-pro` | 2025-12 | 400k | $21 | $168 | tools, structured output, reasoning, file, image |
| GPT-5 Pro | `openai/gpt-5-pro` | 2025-10 | 400k | $15 | $120 | tools, structured output, reasoning, file, image |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- JSON: https://www.anchorterminal.com/api/v1/tools/gpt-5-pro.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming