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Poe

gpt-oss-120b-cs API

Poe
About

Build advanced reasoning agents with gpt-oss-120b-cs, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support. Access gpt-oss-120b-cs via the Poe API with reliable low-latency inference.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
N/A

Tokens

Input Limit
N/A

Tokens

Max Output
N/A

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

gpt-oss-120b-cs by Poe costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
cerebras/gpt-oss-120b-cs
Provider
Poe
Family
Release Date
Aug 6, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
POE_API_KEY
API Base URL
https://api.poe.com/v1
Documentation