OpenAI

GPT-5.5 Pro

gpt-5.5-pro

The GPT-5.5 tier for precision-heavy reasoning and coding.

Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding

1M context1M context
Released2026-04-23
Relays7 sites
reasoningcode generationtool use

Model information

Model ID
gpt-5.5-pro
Context
1.1M
Max input
922K
Max output
128K
Knowledge cutoff
2025-12-01
Open weights
Not supported
License
-
Release date
2026-04-23

Input

Text: SupportedImage: SupportedAudio: Not supportedVideo: Not supportedPDF: SupportedFile: Supported

Output

Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported

API capabilities

Reasoning: SupportedTool call: SupportedStructured output: UnknownTemperature: Not supported

OpenAI Official Pricing

CNY
Updated: 2026-10-04T22:55:12.705+08:00

Input

~¥200.68/ 1M tokens

Output

~¥1204.079/ 1M tokens

Relay Comparison

Compare token, per-request, or per-second pricing by relay channel.

How should GPT-5.5 Pro relay pricing be compared?

This GPT-5.5 Pro pricing page compares official pricing with public prices from 7 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: 10/23/2026, 08:14.

Data sources
Public price catalogs, official pricing records, and monitoring results.
Metric definitions
Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
Risk note
Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.