Question 1

What is GPT-5 Mini?

Accepted Answer

GPT-5 Mini is a model from OpenAI, released on Aug 7, 2025. GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost. GPT-5 Mini is the successor to OpenAI's o4-mini model.

Question 2

How much does GPT-5 Mini cost?

Accepted Answer

On the Respan gateway, input starts at $0.25 per 1M tokens on every provider, and output starts at $2.00 per 1M tokens on every provider, after gateway discounts.

Question 3

Which providers serve GPT-5 Mini on Respan?

Accepted Answer

6 providers serve GPT-5 Mini: Azure OpenAI, Inference.net, OpenAI, OpenRouter, and Perplexity. Azure OpenAI and Perplexity require your own provider API key (BYOK).

Question 4

What is GPT-5 Mini's context window?

Accepted Answer

GPT-5 Mini accepts up to 400K tokens of context on its largest provider route.

Question 5

How do I use GPT-5 Mini 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 "openai/gpt-5-mini-2025-08-07". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is GPT-5 Mini?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenAI at 284 tokens per second, and the lowest response latency was 2.2 seconds on Inference.net. Speed varies with request size and provider.

Question 7

Where does GPT-5 Mini rank on the Respan Index?

Accepted Answer

GPT-5 Mini scores 18.3 out of 100 on the Respan Index v1.1, ranking #103 of 138 models. By category: Coding 9.6, Agents 6.0, Reasoning 23.3, Knowledge & language 21.6, and Human preference 42.7. The Respan Index combines independent and lab-reported benchmark results into one score, using benchmark data collected by llmmetric.com.

Question 8

How does GPT-5 Mini score on benchmarks?

Accepted Answer

GPT-5 Mini has 20 published benchmark scores, including SWE-bench Verified 71%, Vending-Bench 2 -31.18, and GPQA Diamond 81.6%. Each score links to where it was published; the data is collected by llmmetric.com.

Provider	Context	Input	Output
Azure OpenAIBYOK only`azure/gpt-5-mini`	400K	$0.25/M	$2.00/M
Inference.net`inference_net/gpt-5-mini`	400K	$0.25/M	$2.00/M
OpenAI`openai/gpt-5-mini`	400K	$0.25/M	$2.00/M
OpenAI`openai/gpt-5-mini-2025-08-07`	400K	$0.25/M	$2.00/M
OpenRouter`openrouter/openai/gpt-5-mini`	400K	$0.25/M	$2.00/M
PerplexityBYOK only`perplexity/openai/gpt-5-mini`	400K	$0.25/M	$2.00/M

GPT-5 Mini

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Time to first token

Response latency

Benchmarks

Respan Indexv1.1

Coding3

Apps

GPT-5 Mini FAQ

Works with your entire stack

Built for AI agents.
Break less.
Ship more.

Agents1

Reasoning4

Math7

Knowledge2

Arena2

Other1