GPT-5 Mini

Compact GPT-5 variant with reasoning and vision at reduced cost.

gpt-5-mini
STABLEGet StartedView uptime
400,000 context
Released August 1, 2025
Starting at $0.23/M (10% off) input tokens
Starting at $1.80/M (10% off) output tokens
Streaming
Vision
Tools
Reasoning
JSON Output
Structured JSON
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10% offthis model via OpenAI

Select Provider

All Providers for GPT-5 Mini

OffRail routes requests to the best providers that are able to handle your prompt size and parameters.

OpenAI
Context: 400k10% off
Input
$0.25$0.225
10% off
/M tokens
Cache Read
$0.025$0.0225
10% off
/M tokens
Output
$2$1.8
10% off
/M tokens
+ $0.010$0.009 per search
Get Started
Azure
Context: 400k
Input
$0.25
/M tokens
Cache Read
$0.025
/M tokens
Output
$2
/M tokens
Get Started

Frequently asked questions

What is GPT-5 Mini?

Compact GPT-5 variant with reasoning and vision at reduced cost. You can access it through OffRail's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does GPT-5 Mini cost?

Pricing for GPT-5 Mini on OffRail starts at $0.25 per million input tokens and $2.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of GPT-5 Mini?

GPT-5 Mini supports a context window of up to 400,000 tokens on its largest provider deployment.

Which providers serve GPT-5 Mini?

GPT-5 Mini is served by OpenAI, Azure through OffRail. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does GPT-5 Mini support tool calling and structured outputs?

Yes. GPT-5 Mini supports both tool (function) calling and strict JSON output schema (upstream-enforced) through OffRail.

When was GPT-5 Mini released?

GPT-5 Mini was released on August 1, 2025.