ChatGPT Instant (GPT-5.5)

Name: OpenAI ChatGPT Instant (GPT-5.5)
Brand: OpenAI
Availability: InStock

openai/chat-latest

openai

ChatGPT's default model — the rolling `chat-latest` alias, currently GPT-5.5 Instant. Tuned for speed and concision, same price as GPT-5.5

Code Examples

from blockrun_llm import LLMClient

client = LLMClient()  # Uses BLOCKRUN_WALLET_KEY (never sent to server)
response = client.chat("openai/chat-latest", "Hello!")

Pricing

Input$5.00 / 1M tokens

Output$30.00 / 1M tokens

Context128K tokens

Max Output128K tokens

5% markup on official openai API prices.

Payment

Network

Base

Currency

USDC

Protocol

x402

Pay per request with USDC on Base. No subscription required.

Try It

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