Question 1

What is GPT-5 Nano (batch)?

Accepted Answer

GPT-5 Nano (batch) is a model from OpenAI, released on Aug 6, 2026. GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...

Question 2

How much does GPT-5 Nano (batch) cost?

Accepted Answer

On the Respan gateway, input starts at $0.02 per 1M tokens on OpenRouter, and output starts at $0.20 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve GPT-5 Nano (batch) on Respan?

Accepted Answer

GPT-5 Nano (batch) is served by OpenRouter.

Question 4

What is GPT-5 Nano (batch)'s context window?

Accepted Answer

GPT-5 Nano (batch) accepts up to 400K tokens of context.

Question 5

How do I use GPT-5 Nano (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-5-nano: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-5 Nano (batch) rank on the Respan Index?

Accepted Answer

GPT-5 Nano (batch) scores 17.3 out of 100 on the Respan Index v1.1, ranking #109 of 138 models. By category: Coding 4.8, Agents 20.8 (estimated), Reasoning 16.8, Knowledge & language 11.7, and Human preference 36.8. 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-5 Nano (batch) score on benchmarks?

Accepted Answer

GPT-5 Nano (batch) has 17 published benchmark scores, including SWE-bench Verified 54.7%, GPQA Diamond 69.4%, and MATH Level 5 95.2%. Each score links to where it was published; the data is collected by llmmetric.com.

GPT-5 Nano (batch)

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Respan Indexv1.1

Coding2

Reasoning3

Math7

Knowledge2

Arena2

Other1

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