GPT-5.5 Pro

GPT-5.5 Pro is the higher-accuracy GPT-5.5 variant for harder questions, deeper research, and more demanding end-to-end tasks.

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Input price: $27.00–$54.00list $30.00-10%
Output price: $162.00–$243.00list $180.00-10%

Context: 1.1M
Max output: 128K

Capability: 163 (#13 of 79)
30-day uptime: —

Released: 2026-04-24

InputTextImageOutputText

Providers

This model is served by the dedicated providers below. We pick the provider for each request, so provider preferences don’t apply, including a provider named in your request. Prices in USD per 1M tokens. Need a custom setup? Contact [email protected].

DedicatedInput$27.00–$54.00-10%Output$162.00–$243.00-10%Cache read—Context1.1MMax output128KThis model is served by a dedicated set of providers. We pick the provider for each request, and you pay the same price whichever one serves it.

Included providers1

SuccessTTFT
OpenAIUnited States——

Pricing

Prices for this model. Each request is billed at these prices, whichever provider serves it.

Item	Standard	Batch	Price
Prompt ≤ 272K tokens
Inputper 1M tokens	$27.00list $30.00-10%	$13.50list $15.00-10%	—
Outputper 1M tokens	$162.00list $180.00-10%	$81.00list $90.00-10%	—
Prompt > 272K tokens
Inputper 1M tokens	$54.00list $60.00-10%	—	—
Outputper 1M tokens	$243.00list $270.00-10%	—	—
Web searchper request	—	—	$0.009list $0.01-10%

Try it

Runs on your balance and is billed like any API request.

curl https://api.ohmygpt.com/v1/responses \
  -H "Authorization: Bearer $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.5-pro",
    "input": "Hello"
  }'

import os

from openai import OpenAI

client = OpenAI(
    api_key=os.environ["OHMYGPT_API_KEY"],
    base_url="https://api.ohmygpt.com/v1",
)

response = client.responses.create(
    model="openai/gpt-5.5-pro",
    input="Hello",
)
print(response.output_text)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.OHMYGPT_API_KEY,
  baseURL: "https://api.ohmygpt.com/v1",
});

const response = await client.responses.create({
  model: "openai/gpt-5.5-pro",
  input: "Hello",
});
console.log(response.output_text);

# ~/.codex/config.toml
model = "openai/gpt-5.5-pro"
model_provider = "ohmygpt"

[model_providers.ohmygpt]
name = "OhMyGPT"
base_url = "https://api.ohmygpt.com/v1"
env_key = "OHMYGPT_API_KEY"
wire_api = "responses"

The answer streams in here.

Billed by usage

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Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-10), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

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