OpenAI

gpt-5.5

openai/gpt-5.5
Context

1M

Input

text, image

Output

text

Tool calling

Supported

About this model

GPT-5.5 is a highly capable and efficient model featuring dynamic routing between 'Instant' and 'Thinking' modes. It provides improvements in conceptual clarity, scientific research ability, accuracy during knowledge work, and polished conversational tones.

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Input modalities

text

Accepted as model input

image

Accepted as model input

Providers

Available routing options for this model through OneInfer.

OpenAI
Available

Input tokens

$5.000 / 1M tokens

Output tokens

$30.000 / 1M tokens

Routing

OneInfer optimized

Pricing

Current OneInfer pricing for this model.

UsagePrice
Input tokens$5.000 / 1M tokens
Output tokens$30.000 / 1M tokens
Cached input tokens$0.300 / 1M tokens

Performance

Published evaluation results associated with this model.

Reasoning

Terminal-Bench 2.082.7
FrontierMath Tier 1-351.7
FrontierMath Tier 435.4

API example

Refer Documentation
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",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'