OpenAI: GPT-5 Mini

Text input File input Image input Text output
Author's Description

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.

Key Specifications
Cost
$$$$$
Context
400K
Released
Aug 07, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Tools Include Reasoning Tool Choice Seed Response Format Max Tokens Structured Outputs Reasoning
Features

This model supports the following features:

Structured Outputs Reasoning Tools Response Format
Performance Summary

GPT-5 Mini, a compact version of GPT-5, demonstrates moderate speed performance, ranking in the 36th percentile across benchmarks. Its pricing is also moderate, placing it in the 27th percentile. A standout feature is its exceptional reliability, achieving a 100% success rate across all benchmarks, indicating minimal technical failures. The model exhibits perfect accuracy in General Knowledge and Hallucinations benchmarks, notably being the most accurate model at its price point and speed for these categories. It shows strong performance in Reasoning (96% accuracy, 87th percentile), Instruction Following (75% accuracy, 87th percentile), Mathematics (94% accuracy, 89th percentile), and Coding (95% accuracy, 96th percentile), indicating proficiency in complex analytical and problem-solving tasks. While its Ethics accuracy is 98% (40th percentile) and Email Classification is 97% (48th percentile), these scores are solid but not as exceptional as its top-tier results. GPT-5 Mini's key strengths lie in its robust reasoning, mathematical, and coding capabilities, coupled with perfect accuracy in knowledge recall and hallucination prevention, all delivered with high reliability. Its primary area for potential improvement is its moderate speed and pricing, though its performance-to-cost ratio is often favorable.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.25
Completion $2
Input Cache Read $0.025
Web Search $10000

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
OpenAI
OpenAI | openai/gpt-5-mini-2025-08-07 400K $0.25 / 1M tokens $2 / 1M tokens
Azure
Azure | openai/gpt-5-mini-2025-08-07 400K $0.25 / 1M tokens $2 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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