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GPT-OSS 120B

openai/gpt-oss-120b

openai

Open-weight 120B model (Apache 2.0), flagship open model. Available on testnet for developer testing.

Code Examples

from blockrun_llm import LLMClient

# Testnet: Use testnet API endpoint
client = LLMClient(api_url="https://testnet.blockrun.ai/api")
response = client.chat("openai/gpt-oss-120b", "Hello!")

Pricing

Per Request$0.0020
Context128K tokens
Max Output16K tokens

Flat rate per request. No token counting.

Payment

Network
Base Sepolia
Currency
Testnet USDC
Protocol
x402

Pay per request with testnet USDC on Base Sepolia. Get testnet USDC from Circle faucet.

Try It

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