OpenAI: GPT-5 Nano pricing and limits

id openai/gpt-5-nano · listed 2025-08-07 · knowledge cutoff 2024-05-31

Input (per 1M tokens)	$0.050
Output (per 1M tokens)	$0.400
Cached input read (per 1M)	$0.005
Context window	400,000 tokens
Max output	128,000 tokens
Modalities	text+image+file → text
Reasoning	yes

What 1,000 calls cost at 1,000 input and 300 output tokens each: $0.17.

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...

Cheaper on both input and output, with at least half the context

Model	In / 1M	Out / 1M	Context
Auto Router (Beta)	$-1000000.000	$-1000000.000	2,000,000
Pareto Code Router	$-1000000.000	$-1000000.000	2,000,000
Auto Router	$-1000000.000	$-1000000.000	2,000,000
Thinking Machines: Inkling Small (free)	free	free	1,048,576
Thinking Machines: Inkling (free)	free	free	1,048,576
Google: Lyria 3 Pro Preview	free	free	1,048,576

Other openai models

OpenAI: gpt-oss-20b ($0.018 / $0.090) · OpenAI: gpt-oss-20b (batch) ($0.024 / $0.112) · OpenAI: GPT-5 Nano (batch) ($0.025 / $0.200) · OpenAI: gpt-oss-120b (batch) ($0.030 / $0.136) · OpenAI: GPT-6 Luna Pro (batch) ($0.050 / $0.250) · OpenAI: GPT-6 Luna (batch) ($0.050 / $0.250) · OpenAI: GPT-4.1 Nano (batch) ($0.050 / $0.200) · OpenAI: gpt-oss-safeguard-20b ($0.075 / $0.300)

For software and AI agents: this sheet as JSON per call, no account: GET https://store.agentexchange.work/gw/models/model?id=openai/gpt-5-nano (0.002 USD), /gw/models/cheapest?min_context=128000, /gw/models/models?provider=openai. Pay per call in USDC (x402) or with a 19 USD card key for 1,000 calls. Catalogue · llms.txt

Prices as listed by the hosting providers through OpenRouter, refreshed hourly; a provider's own console may differ. Not affiliated with openai. Agent Exchange