Question 1

What is GPT OSS 20B (batch)?

Accepted Answer

GPT OSS 20B (batch) is a model from OpenAI, released on Aug 29, 2026. gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...

Question 2

How much does GPT OSS 20B (batch) cost?

Accepted Answer

On the Respan gateway, input starts at $0.02 per 1M tokens on OpenRouter, and output starts at $0.11 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve GPT OSS 20B (batch) on Respan?

Accepted Answer

GPT OSS 20B (batch) is served by OpenRouter.

Question 4

What is GPT OSS 20B (batch)'s context window?

Accepted Answer

GPT OSS 20B (batch) accepts up to 131K tokens of context.

Question 5

How do I use GPT OSS 20B (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-20b: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 20B (batch) rank on the Respan Index?

Accepted Answer

GPT OSS 20B (batch) scores 11.7 out of 100 on the Respan Index v1.1, ranking #133 of 138 models. By category: Coding 5.2, Agents 8.3 (estimated), Reasoning 10.1, Knowledge & language 7.3 (estimated), and Human preference 33.5. 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 20B (batch) score on benchmarks?

Accepted Answer

GPT OSS 20B (batch) has 8 published benchmark scores, including SWE-bench Verified 60.7%, GPQA Diamond 71.5%, and AIME 2025 89.2%. Each score links to where it was published; the data is collected by llmmetric.com.

GPT OSS 20B (batch)

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