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GPT-5.3

openai/gpt-5.3

openai

High intelligence with medium speed. Multimodal with vision, function calling, and structured outputs

Code Examples

from blockrun_llm import LLMClient

client = LLMClient()  # Uses BLOCKRUN_WALLET_KEY (never sent to server)
response = client.chat("openai/gpt-5.3", "Hello!")

Pricing

Input$1.75 / 1M tokens
Output$14.00 / 1M tokens
Context128K tokens
Max Output16K tokens

5% markup on official openai API prices.

Payment

Network
Circle Gateway (mainnet)
Currency
USDC
Protocol
x402

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

Try It

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