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GPT-OSS 120B Ultra

Chat model by OpenAI.

OpenAI language model featuring a 131,072-token context window. Engineered for dialogue, instruction following, and versatile text generation.

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Models / GPT-OSS 120B UltraID: deepinfra/openai/gpt-oss-120b-Ultra

Context window

Maximum input context length.

131.1K

tokens

Maker

OpenAI

Served On: DeepInfra

Specifications

Context window, ranked against other chat models

Proportional scale: 0 to 1.05M tokens. Not ranked, no published context window: qwen-plus-2025-09-11, voxtral-small-24b-2507, qwen3.6-plus-2026-04-02.

Context window

131.1K

tokens
Max output

—

Modality

chat

Vision
Function calling
System prompt

Pricing

Rates are read live

Pricing for openai/gpt-oss-120b-Ultra is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How GPT-OSS 120B Ultra is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from OpenAI

gpt-oss-120b-1gpt-6.1-solgpt-5.2-pro-2025-12-11gpt-audio-1.5

Start building with openai/gpt-oss-120b-Ultra

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · deepinfra/openai/gpt-oss-120b-Ultra
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with deepinfra/openai/gpt-oss-120b-Ultra
claude --model deepinfra/openai/gpt-oss-120b-Ultra

FAQs

What is GPT-OSS 120B Ultra?

OpenAI language model featuring a 131,072-token context window. Engineered for dialogue, instruction following, and versatile text generation.

How much does GPT-OSS 120B Ultra cost?

GPT-OSS 120B Ultra is billed at the provider's list price on nRouter with no per-token markup — tokens settle at the exact upstream rate. Input and output rates are read live, so see the pricing section above for the current figures.

What is the context length of GPT-OSS 120B Ultra?

GPT-OSS 120B Ultra supports a 131,072-token context window.

Does GPT-OSS 120B Ultra support tool calling and structured outputs?

Yes. GPT-OSS 120B Ultra supports tool calling (function calling), so it can invoke external tools and APIs during a conversation.

What inputs and outputs does GPT-OSS 120B Ultra support?

GPT-OSS 120B Ultra takes text as input and returns text as output.

How do I use GPT-OSS 120B Ultra via nRouter?

Use any OpenAI-compatible client: point it at https://api.nrouter.ai/v1 with your nRouter API key and set the model to "deepinfra/openai/gpt-oss-120b-Ultra". The quick-start panel above has a copy-paste curl command for this model.

When was GPT-OSS 120B Ultra released?

GPT-OSS 120B Ultra was released on October 7, 2026.

Where is the GPT-OSS 120B Ultra documentation?

Start at nrouter.ai/docs. The quick-start guide (nrouter.ai/docs/getting-started/quick-start) covers API keys and your first request, and the API reference (nrouter.ai/docs/api-reference) lists every parameter.

What other text models does OpenAI have?

Other OpenAI text models on nRouter include GPT-OSS 120B 1 (nrouter.ai/models/gpt-oss-120b-1), GPT-6.1 Sol (nrouter.ai/models/gpt-6.1-sol), GPT-5.2 Pro (nrouter.ai/models/gpt-5.2-pro-2025-12-11), GPT Audio 1.5 (nrouter.ai/models/gpt-audio-1.5).