OpenAI

OpenAI: GPT 5.5 Pro

openai/gpt-5.5-pro
Studio Quality Instant (~1–2s) 99% Uptime 4.9 (98% positive)
Context

1M

Input

text, image

Output

text

Tool calling

Supported

About this model

GPT-5.5 Pro is the highest-capability model in the 5.5 lineup, optimized for the hardest tasks and long-running workflows. It uses significant compute to 'think' harder before answering, making it ideal for deep research, highly complex coding, and extensive multi-step problem solving.

Input modalities

text

Accepted as model input

image

Accepted as model input

Providers

Available routing options for this model through OneInfer.

Available

Input tokens

$30.000 / 1M tokens

Output tokens

$180.000 / 1M tokens

Routing

OneInfer optimized

Pricing

Current OneInfer pricing for this model.

UsagePrice
Input tokens$30.000 / 1M tokens
Output tokens$180.000 / 1M tokens

Performance & Benchmarks

Independent evaluations and live cluster operational metrics

Quality Grade Verified Cluster Grade
Response Speed Standard Latency
Cluster Reliability Active (99% Uptime)
Community Rating 4.8 / 5.0
Key Strengths
  • Optimized for unified API inference
  • High prompt fidelity across structured outputs
Guidance & Watchouts

General inference, enterprise agent workflows, and conversational pipelines.

Based on data from Artificial Analysis. This analysis was generated by OneInfer and does not represent the views or endorsement of Artificial Analysis.

API Guide

Refer Documentation
  1. 1

    Generate your access token

    Use your API key to generate the JWT access token required by the Models API.

  2. 2

    Add the JWT token

    Copy the generated JWT token and replace JWT_TOKEN in the example below.

  3. 3

    Check your credits

    If your balance is too low, before calling the model.

  4. 4

    Run the API example

    Choose your preferred language, copy the example, and send your first model request.

    curl https://api.oneinfer.ai/v1/ula/chat/completions \
      -H "Authorization: Bearer $JWT_TOKEN" \
      -H "Content-Type: application/json" \
      -d '{
        "model": "openai/gpt-5.5-pro",
        "messages": [
          { "role": "user", "content": "Hello!" }
        ]
      }'

Community Model Reviews & Ratings

Verified visitor & developer evaluations on OpenAI: GPT 5.5 Pro's real-world intelligence, code accuracy, and speed

4.8
Community consensus rating
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