OpenAI: GPT-5 Mini

OpenAI

OpenAI: GPT-5 Mini by OpenAI costs $0.25 per 1M input tokens and $2.00 per 1M output tokens, with a 400K-token context window.

Pricing

Input (per 1M tokens)

$0.25

Output (per 1M tokens)

$2.00

Cached input (per 1M)

$0.03

Provider	Input / 1M	Output / 1M
openrouter	$0.25	$2.00
OpenAI	$0.25	$2.00

Specifications

Provider: OpenAI
Context window: 400K tokens
Parameters: —
Released: Aug 2025
Open weights: No
Frontier model: No

Benchmarks

Epoch Capabilities Index: 145.5
FrontierMath: 27.2
GPQA Diamond: 75.0
LMArena (Chatbot Arena) Elo: 1373.2
LMArena Vision Elo: 1202.1
SWE-bench Multilingual: 39.7
SWE-bench Verified: 59.8

Speed & latency

Time to first token

2.64s

Output speed

217 tok/s

Fastest host: openai (via vercel-ai-gateway).

Compare OpenAI: GPT-5 Mini with…

OpenAI: GPT-5 Mini vs OpenAI: GPT-5.6 Sol Pro$10.00/1M OpenAI: GPT-5 Mini vs OpenAI: GPT-6.1 Sol Pro$10.00/1M OpenAI: GPT-5 Mini vs OpenAI: GPT-6.1 Sol Pro (batch)$5.00/1M OpenAI: GPT-5 Mini vs OpenAI: GPT-6.1 Sol$10.00/1M OpenAI: GPT-5 Mini vs OpenAI: GPT-6.1 Sol (batch)$5.00/1M OpenAI: GPT-5 Mini vs OpenAI: GPT-6 Luna Pro$0.50/1M

FAQ

How much does OpenAI: GPT-5 Mini cost?

OpenAI: GPT-5 Mini is priced at $0.25 per 1M input tokens and $2.00 per 1M output tokens. Output tokens cost more than input.

What is OpenAI: GPT-5 Mini's context window?

OpenAI: GPT-5 Mini supports a context window of 400K tokens — the maximum prompt plus response length it can handle in a single request.

Is OpenAI: GPT-5 Mini open weight?

No — OpenAI: GPT-5 Mini is a closed/proprietary model accessed via API.

Data as of 2026-10-14. Source: Pricing via OpenRouter API, openrouter.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.