GPT-5 Pro

GPT-5 Pro is a higher-accuracy tier in the GPT-5 line, intended for tough analysis, coding reviews, and planning. It is the first version of the gpt-pro line in the registry, released on 2025-10-06. The model has a context window of 400000 tokens and a maximum output of 272000 tokens. Pricing starts at $13.50 per million input tokens and $108.00 per million output tokens, with cached input at $1.50 per million tokens. Weights are not open. It accepts image and text input, returns text, supports reasoning mode and tool calling, and has a knowledge cutoff of 2024-09-30.

First version of its line in the registry.

Range across the hosts that serve it: up to $15.00 per 1M input tokens.

• ·400000 token context window
• ·272000 token maximum output
• ·Reasoning mode for complex tasks
• ·Tool calling support
• ·Accepts image and text input

• Reach for it for tough analysis tasks
• Reach for it for coding reviews
• Reach for it for planning complex projects
• Reach for it for large-context reasoning

16 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window size?

The context window is 400000 tokens, and the maximum output is 272000 tokens.

What does GPT-5 Pro cost?

Pricing starts at $13.50 per million input tokens and $108.00 per million output tokens. Cached input is $1.50 per million tokens.

Does GPT-5 Pro have open weights?

No, the weights are not open. The model accepts image and text input and returns text.