Question 1

What is GPT-OSS 120B (batch)?

Accepted Answer

GPT-OSS 120B (batch) is a model from OpenAI, released on Aug 29, 2026. gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...

Question 2

How much does GPT-OSS 120B (batch) cost?

Accepted Answer

On the Respan gateway, input starts at $0.03 per 1M tokens on OpenRouter, and output starts at $0.14 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve GPT-OSS 120B (batch) on Respan?

Accepted Answer

GPT-OSS 120B (batch) is served by OpenRouter.

Question 4

What is GPT-OSS 120B (batch)'s context window?

Accepted Answer

GPT-OSS 120B (batch) accepts up to 131K tokens of context.

Question 5

How do I use GPT-OSS 120B (batch) with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "gpt-oss-120b:batch". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

Where does GPT-OSS 120B (batch) rank on the Respan Index?

Accepted Answer

GPT-OSS 120B (batch) scores 14.5 out of 100 on the Respan Index v1.1, ranking #124 of 138 models. By category: Coding 7.4, Agents 7.9, Reasoning 14.0, Knowledge & language 12.4 (estimated), and Human preference 39.8. The Respan Index combines independent and lab-reported benchmark results into one score, using benchmark data collected by llmmetric.com.

Question 7

How does GPT-OSS 120B (batch) score on benchmarks?

Accepted Answer

GPT-OSS 120B (batch) has 12 published benchmark scores, including SWE-bench Verified 62.4%, APEX-Agents 4.4%, and GPQA Diamond 80.1%. Each score links to where it was published; the data is collected by llmmetric.com.

GPT-OSS 120B (batch)

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Respan Indexv1.1

Coding2

Agents2

Reasoning5

Math2

Arena1

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