GPT OSS 120B Free API on Ollama Cloud

Free API Verified

Available from Ollama Cloud

Catalog metadata matched Reasoning models.dev metadata

Open GPT reasoning model for self-hosted agents and controllable deployments

Free APIOllama Cloud nativeReasoningTool callingJSON modeReasoning

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API Details

Copy-ready connection details

Use these values in your client or SDK.

Base URL

https://api.ollama.com

Model ID

gpt-oss:120b

API format Ollama Cloud native

Technical Details

GPT OSS 120B specifications

Provider and model catalog

Context window 131K

Max output 33K

Status Online

Family gpt-oss

Released Aug 5, 2025

Last updated Aug 5, 2025

Free listing since Aug 10, 2026

Input text

Output text

Capabilities reasoning, tool calling, structured output, temperature control

Open weights Yes

Weights Hugging Face

AI Recommendation

Should you use GPT OSS 120B?

GPT OSS 120B is listed for chat workloads and supports a 131K context window.

Use it when Ollama Cloud's free tier is enough for evaluation, demos, or light production traffic.

Best for

Chat

Strengths & Weaknesses

Strengths

Long context window
Reasoning mode listed
Tool calling support
Structured JSON output

Watch outs

Vision support is not listed

Availability

GPT OSS 120B availability by provider

Current provider only

We only found this GPT OSS 120B listing on Ollama Cloud in the current catalog. Use the related models section for nearby alternatives.

Provider	Model listing	Access	Context	API	Limits
Ollama Cloud	GPT OSS 120B	Free tier	131K	Native	Varies

View Ollama Cloud setup guide →

Compare

GPT OSS 120B alternatives to consider

Open comparison

Model	Provider	Context	Access
minimax-m3	Ollama Cloud	1.0M	Free tier
gpt-oss:20b	Ollama Cloud	131K	Free tier
nemotron-3-ultra	Ollama Cloud	262K	Free tier
deepseek-v3.1:671b-cloud	Ollama Cloud	128K	Check provider
qwen3-coder:480b-cloud	Ollama Cloud	128K	Check provider

Typical Use Cases

GPT OSS 120B use cases

Chat

GPT OSS 120B is tagged for chat in this catalog.

FAQ

GPT OSS 120B free API FAQ

Is GPT OSS 120B free to use?

GPT OSS 120B is listed with free API access on Ollama Cloud, subject to the provider's quota and account policy.

What is the GPT OSS 120B model ID?

The model ID shown in this catalog is gpt-oss:120b.

What context window does GPT OSS 120B support?

The listed context window is 131K tokens with up to 33K output tokens.

More about GPT OSS 120B

Free GPT OSS 120B API.

For API keys, setup steps, and provider-level limits, see the Ollama Cloud provider page.