Ways to buy 5
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 OpenAI APIThe lab's own API · cached $0.125 | $1.25 | $10 | $1.25 / $10List price | $0.125 | List price |
 Azure AI FoundryDefault region · cached $0.125 | $1.25 | $10 | $1.25 / $10Same as list | $0.125 | Same as list |
 Databricks Mosaic AI Gateway + Foundation Model APIsFrom the platform pricing page | $1.25 | $10 | $1.25 / $10Same as list | n/a | Same as list |
| OpenAI default · cached $0.125 | $1.25 | $10 | $1.25 / $10Same as list | $0.125 | Same as list |
| Azure AI Foundry swedencentral · cached $0.138 | $1.38 | $11 | $1.38 / $11+10% vs list | $0.138 | +10% vs list |
USD per 1M tokens; batch $0.625 in, $5 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $325.00 direct.
Helicone$325.00+0%
Kong AI Gateway$325.00+0%
LiteLLM$325.00+0%
Vercel AI Gateway$325.00+0%
Cloudflare AI Gateway$341.25+5%
Requesty$341.25+5%
Eden AI$342.88+5.5%
OpenRouter$342.88+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) | · |
 Muse Spark 1.3Meta · 1M | $1.25 | $4.25 | $1.25 / $4.25 | $2 | 1M | Lab list price | · |
 Gemini 3.1 Pro PreviewGoogle · 1MCheapest: $2.25 on Google Vertex AI (global-flex) | $2 | $12 | $2 / $12 | $4.5 | 1M | $2.25 on Google Vertex AI (global-flex) | · |
| Muse Spark 1.1 Meta · 1M | $1.25 | $4.25 | $1.25 / $4.25 | $2 | 1M | Lab list price | · |
 Qwen3.8 Max (0902)Qwen (Alibaba) · 1M | $2 | $6 | $2 / $6 | $3 | 1M | Lab list price | · |
About GPT-5
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience.
Takes text, image, files in and returns text. First listed Aug 12, 2025. Up to 128K output tokens. Blended price $3.44 per 1M tokens at 3 input to 1 output. Overall score 3 on leadersboard.fru.dev (rank 43). Model id gpt-5.
Price history
List price since Aug 12, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does GPT-5 cost?
$1.25 per million input tokens and $10 per million output tokens, with cached input at $0.125, or $0.625 and $5 through the Batch API.
What is the context window of GPT-5?
400K tokens, with up to 128K tokens of output.
Where is GPT-5 cheapest?
Of 5 routes tracked, Azure AI Foundry is cheapest at $1.25 input and $10 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.