Ways to buy 4
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 OpenAIflex, cheapest · cached $0.01 | $0.1 | $0.625 | $0.1 / $0.625-50% vs list | $0.01 | -50% vs list |
| OpenAI API The lab's own API · cached $0.02 | $0.2 | $1.25 | $0.2 / $1.25List price | $0.02 | List price |
 Azure AI FoundryDefault region · cached $0.02 | $0.2 | $1.25 | $0.2 / $1.25Same as list | $0.02 | Same as list |
| Azure AI Foundry us · cached $0.022 | $0.22 | $1.38 | $0.22 / $1.38+10% vs list | $0.022 | +10% vs list |
USD per 1M tokens; batch $0.1 in, $0.625 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $45.00 direct.
Helicone$45.00+0%
Kong AI Gateway$45.00+0%
LiteLLM$45.00+0%
Vercel AI Gateway$45.00+0%
Cloudflare AI Gateway$47.25+5%
Requesty$47.25+5%
Eden AI$47.48+5.5%
OpenRouter$47.48+5.5%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | ||||||
|---|---|---|---|---|---|---|---|
| GPT-6 Luna OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex) | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1.05M | $0.1 on OpenAI (flex) | · |
| GPT-6 Luna Pro OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex) | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1.05M | $0.1 on OpenAI (flex) | · |
| GPT-6 Sol OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · |
| GPT-6 Sol Pro OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · |
 GLM 5.3Z.ai · 1.31M | $0.561 | $1.76 | $0.561 / $1.76 | $0.862 | 1.31M | on Baidu (fp8) | · |
| GLM 4.6 Z.ai · 205K | $0.43 | $1.75 | $0.43 / $1.75 | $0.76 | 205K | on Venice (fp4) | · |
 DeepSeek V4.1 FlashDeepSeek · 1MCheapest: $0.131 on Morph | $0.15 | $0.6 | $0.15 / $0.6 | $0.262 | 1M | $0.131 on Morph | · |
 Kimi K2.5Moonshot AI · 262K | $0.45 | $2.25 | $0.45 / $2.25 | $0.9 | 262K | on SiliconFlow (int4) | · |
About GPT-5.4 Nano
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
Takes files, image, text in and returns text. First listed Mar 19, 2026. Up to 128K output tokens. Blended price $0.463 per 1M tokens at 3 input to 1 output. Model id gpt-5-4-nano.
Price history
List price since Mar 19, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does GPT-5.4 Nano cost?
$0.2 per million input tokens and $1.25 per million output tokens, with cached input at $0.02, or $0.1 and $0.625 through the Batch API.
What is the context window of GPT-5.4 Nano?
400K tokens, with up to 128K tokens of output.
Where is GPT-5.4 Nano cheapest?
Of 4 routes tracked, OpenAI is cheapest at $0.1 input and $0.625 output per million tokens.
Sources: OpenRouter's public model catalog and each provider's own pricing page, read every morning at 05:00 UTC; gateway fees re-read every Monday. List prices: your contract may differ. Logos via logo.dev; trademarks belong to their owners.