Ways to buy 2
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 OpenAI APIThe lab's own API · cached $0.03 | $0.25 | $2 | $0.25 / $2List price | $0.03 | List price |
 Azure AI FoundryDefault region · cached $0.03 | $0.25 | $2 | $0.25 / $2Same as list | $0.03 | Same as list |
USD per 1M tokens. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $65.00 direct.
Helicone$65.00+0%
Kong AI Gateway$65.00+0%
LiteLLM$65.00+0%
Vercel AI Gateway$65.00+0%
Cloudflare AI Gateway$68.25+5%
Requesty$68.25+5%
Eden AI$68.58+5.5%
OpenRouter$68.58+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) | · |
 Gemini 3.8 FlashGoogle · 1MCheapest: $0.75 on Google Gemini API (flex) | $0.75 | $3.75 | $0.75 / $3.75 | $1.5 | 1M | $0.75 on Google Gemini API (flex) | · |
 GLM 5.3Z.ai · 1.31M | $0.563 | $2.5 | $0.563 / $2.5 | $1.05 | 1.31M | on DeepInfra (fp4) | · |
| Gemini 3.7 Flash Google · 1MCheapest: $0.75 on Google Vertex AI (global-flex) | $0.75 | $3.75 | $0.75 / $3.75100% | $1.5 | 1M | $0.75 on Google Vertex AI (global-flex) | 100% |
| GLM 4.6 Z.ai · 205K | $0.43 | $1.75 | $0.43 / $1.75 | $0.76 | 205K | on Venice (fp4) | · |
About GPT-5.1-Codex-Mini
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Takes image, text in and returns text. First listed Nov 14, 2025. Up to 128K output tokens. Blended price $0.688 per 1M tokens at 3 input to 1 output. Model id gpt-5-1-codex-mini.
Price history
List price since Nov 14, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
| Seen | Model | Old price | New price | Change |
|---|---|---|---|---|
| Jul 28, 2026 | GPT-5.1-Codex-MiniCached input $0.025 to $0.03 | Cached input $0.025 | Cached input $0.03 | +20% |
| May 29, 2026 | GPT-5.1-Codex-MiniCached input $0.03 to $0.025 | Cached input $0.03 | Cached input $0.025 | -17% |
| Apr 23, 2026 | GPT-5.1-Codex-MiniCached input $0.025 to $0.03 | Cached input $0.025 | Cached input $0.03 | +20% |
Questions
How much does GPT-5.1-Codex-Mini cost?
$0.25 per million input tokens and $2 per million output tokens, with cached input at $0.03.
What is the context window of GPT-5.1-Codex-Mini?
400K tokens, with up to 128K tokens of output.
Where is GPT-5.1-Codex-Mini cheapest?
Of 2 routes tracked, Azure AI Foundry is cheapest at $0.25 input and $2 output per million tokens.
List prices from providers' pages on the date shown; your contract may differ. Logos via logo.dev; trademarks belong to their owners.