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openaiopenai·Aug 7, 2025

OpenAI: GPT-5 Mini

openai/gpt-5-mini
context
400K
Max Output
128K
Input / 1M
$0.25
Output / 1M
$2.00

About

GPT-5 Mini is a compact variant of GPT-5 built for lighter-weight reasoning tasks at reduced latency and cost. It retains the instruction-following and safety-tuning characteristics of GPT-5 and is positioned as the successor to OpenAI's o4-mini. It accepts text, image, and file inputs and returns text, with a 400K-token context window and up to 128K output tokens. The API supports prompt caching and an optional web search tool.

Capabilities

Context Length
400K
Max Output
128K
Reasoning
Yes
In
text, image, file
Out
text

Benchmarks

View leaderboard
33.0#54 of 133
Intelligence Index
35.3#53 of 118
Coding Index
90.7#11 of 63
Math Index

Reasoning & Knowledge

MMLU-Pro83.7%
GPQA Diamond82.8%
HLE19.7%

Coding & Agentic

LiveCodeBench83.8%
SciCode39.2%
Terminal-Bench Hard33.3%

Math

AIME 202590.7%

Source: Artificial Analysis

Pricing

Full pricing
TypePrice / 1M tokens
Input$0.25
Output$2.00
Cache Read$0.025
Web Search$0.01 / call

API

API reference

OpenAI-compatible · Model ID openai/gpt-5-mini

curl https://api.elliotgate.com/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5-mini",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

OFTEN COMPARED

GPT-5 Mini comparisons

Decide which model wins on the dimensions that matter for your workload — context, benchmarks, pricing, or serving latency.