API pricing

# OpenAI API pricing

> OpenAI API prices run from $0.018 per million input tokens (gpt-oss-20b) to $150 (o1-pro). Its highest-ranked model, GPT-6 Astra, costs $10 input and $50 output per million tokens.
- Canonical page: https://noometry.com/llm-pricing/openai
- Last updated: 2026-10-10
- Title: OpenAI API Pricing (October 2026): Every Model per 1M Tokens

OpenAI API prices run from $0.018 per million input tokens (gpt-oss-20b) to $150 (o1-pro). Its highest-ranked model, GPT-6 Astra, costs $10 input and $50 output per million tokens.

Last verified October 10, 2026

Official price list: [openai.com](https://openai.com/api/pricing)

API prices per million tokens
|  |  |  | Cached input |  |  |  |
| --- | --- | --- | --- | --- | --- | --- |
| [gpt-oss-20b](https://noometry.com/models/gpt-oss-20b) (open weights) | $0.018 | $0.09 | $0.009 | **$0.036** | 131K | 32.5 |
| [gpt-oss-120b](https://noometry.com/models/gpt-oss-120b) (open weights) | $0.037 | $0.17 | — | **$0.0703** | 131K | 36.3 |
| [GPT-5 Nano](https://noometry.com/models/gpt-5-nano) | $0.05 | $0.40 | $0.005 | **$0.14** | 400K | 33.5 |
| [GPT-4.1 nano](https://noometry.com/models/gpt-4-1-nano) | $0.10 | $0.40 | $0.025 | **$0.18** | 1.05M | 27.9 |
| [GPT-6 Luna](https://noometry.com/models/gpt-6-luna) | $0.10 | $0.50 | $0.01 | **$0.20** | 1.05M | 53.3 |
| [GPT-6 Luna Pro](https://noometry.com/models/gpt-6-luna-pro) | $0.10 | $0.50 | $0.01 | **$0.20** | 1.05M | — |
| [GPT-4o mini](https://noometry.com/models/gpt-4o-mini) | $0.15 | $0.60 | $0.075 | **$0.26** | 128K | 25.5 |
| [GPT-5.6 Luna](https://noometry.com/models/gpt-5-6-luna) | $0.20 | $1.20 | $0.02 | **$0.45** | 1.05M | 54.6 |
| [GPT-5.6 Luna Pro](https://noometry.com/models/gpt-5-6-luna-pro) | $0.20 | $1.20 | $0.02 | **$0.45** | 1.05M | — |
| [GPT-5.4 nano](https://noometry.com/models/gpt-5-4-nano) | $0.20 | $1.25 | $0.02 | **$0.46** | 400K | 41.9 |
| [GPT-5 Mini](https://noometry.com/models/gpt-5-mini) | $0.25 | $2 | $0.025 | **$0.69** | 400K | 41.8 |
| [GPT-5.1-Codex-mini](https://noometry.com/models/gpt-5-1-codex-mini) | $0.25 | $2 | $0.025 | **$0.69** | 400K | — |
| [GPT-4.1 mini](https://noometry.com/models/gpt-4-1-mini) | $0.40 | $1.60 | $0.10 | **$0.70** | 1.05M | 33.6 |
| [GPT-3.5-turbo](https://noometry.com/models/gpt-3-5-turbo) | $0.50 | $1.50 | Free | **$0.75** | 16K | 23.2 |
| [GPT-5.4 mini](https://noometry.com/models/gpt-5-4-mini) | $0.75 | $4.50 | $0.075 | **$1.69** | 400K | 45.0 |
| [o3-mini](https://noometry.com/models/o3-mini) | $1.10 | $4.40 | $0.55 | **$1.93** | 200K | 36.7 |
| [o4-mini](https://noometry.com/models/o4-mini) | $1.10 | $4.40 | $0.28 | **$1.93** | 200K | 41.6 |
| [GPT-5](https://noometry.com/models/gpt-5) | $1.25 | $10 | $0.13 | **$3.44** | 400K | 50.9 |
| [GPT-5-Codex](https://noometry.com/models/gpt-5-codex) | $1.25 | $10 | $0.13 | **$3.44** | 400K | 37.9 |
| [GPT-5.1](https://noometry.com/models/gpt-5-1) | $1.25 | $10 | $0.13 | **$3.44** | 400K | 49.0 |
| [GPT-5.1-Codex](https://noometry.com/models/gpt-5-1-codex) | $1.25 | $10 | $0.13 | **$3.44** | 400K | 38.6 |
| [GPT-4.1](https://noometry.com/models/gpt-4-1) | $2 | $8 | $0.50 | **$3.50** | 1.05M | 35.9 |
| [o3](https://noometry.com/models/o3) | $2 | $8 | $0.50 | **$3.50** | 200K | 47.5 |
| [GPT-5.6 Sol Pro](https://noometry.com/models/gpt-5-6-sol-pro) | $2 | $10 | $0.20 | **$4** | 1.05M | — |
| [GPT-6 Sol](https://noometry.com/models/gpt-6-sol) | $2 | $10 | $0.20 | **$4** | 1.05M | 61.8 |
| [GPT-6 Sol Pro](https://noometry.com/models/gpt-6-sol-pro) | $2 | $10 | $0.20 | **$4** | 1.05M | — |
| [GPT-6.1 Sol](https://noometry.com/models/gpt-6-1-sol) | $2 | $10 | $0.10 | **$4** | 1.05M | 65.6 |
| [GPT-6.1 Sol Pro](https://noometry.com/models/gpt-6-1-sol-pro) | $2 | $10 | $0.10 | **$4** | 1.05M | — |
| [GPT-4o](https://noometry.com/models/gpt-4o) | $2.50 | $10 | $1.25 | **$4.38** | 128K | 28.6 |
| [GPT-5.6 Terra](https://noometry.com/models/gpt-5-6-terra) | $2 | $12 | $0.20 | **$4.50** | 1.05M | 59.2 |
| [GPT-5.6 Terra Pro](https://noometry.com/models/gpt-5-6-terra-pro) | $2 | $12 | $0.20 | **$4.50** | 1.05M | — |
| [GPT-5.2](https://noometry.com/models/gpt-5-2) | $1.75 | $14 | $0.17 | **$4.81** | 400K | 54.1 |
| [GPT-5.2 Codex](https://noometry.com/models/gpt-5-2-codex) | $1.75 | $14 | $0.17 | **$4.81** | 400K | 42.6 |
| [GPT-5.3 Chat](https://noometry.com/models/gpt-5-3-chat) | $1.75 | $14 | $0.17 | **$4.81** | 128K | 42.8 |
| [GPT-5.3 Codex](https://noometry.com/models/gpt-5-3-codex) | $1.75 | $14 | $0.17 | **$4.81** | 400K | 45.8 |
| [GPT-5.3 Codex Spark](https://noometry.com/models/gpt-5-3-codex-spark) | $1.75 | $14 | $0.17 | **$4.81** | 128K | — |
| [GPT-5.4](https://noometry.com/models/gpt-5-4) | $2.50 | $15 | $0.25 | **$5.63** | 1.05M | 59.4 |
| [GPT-5.6](https://noometry.com/models/gpt-5-6) | $4 | $20 | $0.40 | **$8** | 1.05M | — |
| [GPT-5.6 Sol](https://noometry.com/models/gpt-5-6-sol) | $4 | $20 | $0.40 | **$8** | 1.05M | 65.0 |
| [GPT-5.5](https://noometry.com/models/gpt-5-5) | $5 | $30 | $0.50 | **$11.25** | 1.05M | 63.4 |
| [GPT-4 Turbo](https://noometry.com/models/gpt-4-turbo) | $10 | $30 | — | **$15** | 128K | 30.5 |
| [GPT-6 Astra](https://noometry.com/models/gpt-6-astra) | $10 | $50 | $1 | **$20** | 1.05M | 70.8 |
| [GPT-6 Astra Pro](https://noometry.com/models/gpt-6-astra-pro) | $10 | $50 | $1 | **$20** | 1.05M | — |
| [o1](https://noometry.com/models/o1) | $15 | $60 | $7.50 | **$26.25** | 200K | 40.9 |
| [o3-pro](https://noometry.com/models/o3-pro) | $20 | $80 | — | **$35** | 200K | 42.9 |
| [GPT-4](https://noometry.com/models/gpt-4) | $30 | $60 | — | **$37.50** | 8K | 29.1 |
| [GPT-5 Pro](https://noometry.com/models/gpt-5-pro) | $15 | $120 | — | **$41.25** | 400K | 46.4 |
| [GPT-5.2 Pro](https://noometry.com/models/gpt-5-2-pro) | $21 | $168 | — | **$57.75** | 400K | 52.3 |
| [GPT-5.4 Pro](https://noometry.com/models/gpt-5-4-pro) | $30 | $180 | — | **$67.50** | 1.05M | 58.9 |
| [GPT-5.5 Pro](https://noometry.com/models/gpt-5-5-pro) | $30 | $180 | — | **$67.50** | 1.05M | 64.3 |
| [o1-pro](https://noometry.com/models/o1-pro) | $150 | $600 | — | **$263** | 200K | 31.5 |

## Prices on other platforms

The same models are often sold through clouds and resellers at different rates.

| Model | Route | Input | Output | Checked |
| --- | --- | --- | --- | --- |
| [GPT-6 Astra](https://noometry.com/models/gpt-6-astra) | azure | $10 | $50 | 2026-10-10 |
|  | bedrock | $10 | $50 | 2026-10-10 |
|  | openai | $10 | $50 | 2026-10-10 |
|  | openrouter | $10 | $50 | 2026-10-10 |
| [GPT-6.1 Sol](https://noometry.com/models/gpt-6-1-sol) | azure | $2 | $10 | 2026-10-10 |
|  | bedrock | $2 | $10 | 2026-10-10 |
|  | openai | $2 | $10 | 2026-10-10 |
|  | openrouter | $2 | $10 | 2026-10-10 |
| [GPT-5.6 Sol](https://noometry.com/models/gpt-5-6-sol) | azure | $4 | $20 | 2026-10-10 |
|  | bedrock | $4 | $20 | 2026-10-10 |
|  | openai | $4 | $20 | 2026-10-10 |
|  | openrouter | $2 | $10 | 2026-10-10 |
| [GPT-5.5 Pro](https://noometry.com/models/gpt-5-5-pro) | openai | $30 | $180 | 2026-10-10 |
|  | openrouter | $30 | $180 | 2026-10-10 |
| [GPT-5.5](https://noometry.com/models/gpt-5-5) | azure | $5 | $30 | 2026-10-10 |
|  | bedrock | $5.50 | $33 | 2026-10-10 |
|  | openai | $5 | $30 | 2026-10-10 |
|  | openrouter | $5 | $30 | 2026-10-10 |
| [GPT-6 Sol](https://noometry.com/models/gpt-6-sol) | azure | $2 | $10 | 2026-10-10 |
|  | bedrock | $2 | $10 | 2026-10-10 |
|  | openai | $2 | $10 | 2026-10-10 |
|  | openrouter | $2 | $10 | 2026-10-10 |
| [GPT-5.4](https://noometry.com/models/gpt-5-4) | azure | $2.50 | $15 | 2026-10-10 |
|  | bedrock | $2.75 | $16.50 | 2026-10-10 |
|  | openai | $2.50 | $15 | 2026-10-10 |
|  | openrouter | $2.50 | $15 | 2026-10-10 |
| [GPT-5.6 Terra](https://noometry.com/models/gpt-5-6-terra) | azure | $2 | $12 | 2026-10-10 |
|  | bedrock | $2 | $12 | 2026-10-10 |
|  | openai | $2 | $12 | 2026-10-10 |
|  | openrouter | $2 | $12 | 2026-10-10 |
| [GPT-5.4 Pro](https://noometry.com/models/gpt-5-4-pro) | azure | $30 | $180 | 2026-10-10 |
|  | openai | $30 | $180 | 2026-10-10 |
|  | openrouter | $30 | $180 | 2026-10-10 |
| [GPT-5.6 Luna](https://noometry.com/models/gpt-5-6-luna) | azure | $0.20 | $1.20 | 2026-10-10 |
|  | bedrock | $0.20 | $1.20 | 2026-10-10 |
|  | openai | $0.20 | $1.20 | 2026-10-10 |
|  | openrouter | $0.20 | $1.20 | 2026-10-10 |
| [GPT-5.2](https://noometry.com/models/gpt-5-2) | azure | $1.75 | $14 | 2026-10-10 |
|  | openai | $1.75 | $14 | 2026-10-10 |
|  | openrouter | $1.75 | $14 | 2026-10-10 |
| [GPT-6 Luna](https://noometry.com/models/gpt-6-luna) | azure | $0.10 | $0.50 | 2026-10-10 |
|  | bedrock | $0.10 | $0.50 | 2026-10-10 |
|  | openai | $0.10 | $0.50 | 2026-10-10 |
|  | openrouter | $0.10 | $0.50 | 2026-10-10 |
| [GPT-5.2 Pro](https://noometry.com/models/gpt-5-2-pro) | openai | $21 | $168 | 2026-10-10 |
|  | openrouter | $21 | $168 | 2026-10-10 |
| [GPT-5](https://noometry.com/models/gpt-5) | azure | $1.25 | $10 | 2026-10-10 |
|  | openai | $1.25 | $10 | 2026-10-10 |
|  | openrouter | $1.25 | $10 | 2026-10-10 |
| [GPT-5.1](https://noometry.com/models/gpt-5-1) | azure | $1.25 | $10 | 2026-10-10 |
|  | openai | $1.25 | $10 | 2026-10-10 |
|  | openrouter | $1.25 | $10 | 2026-10-10 |
| [o3](https://noometry.com/models/o3) | azure | $2 | $8 | 2026-10-10 |
|  | openai | $2 | $8 | 2026-10-10 |
|  | openrouter | $2 | $8 | 2026-10-10 |
| [GPT-5 Pro](https://noometry.com/models/gpt-5-pro) | azure | $15 | $120 | 2026-10-10 |
|  | openai | $15 | $120 | 2026-10-10 |
|  | openrouter | $15 | $120 | 2026-10-10 |
| [GPT-5.3 Codex](https://noometry.com/models/gpt-5-3-codex) | azure | $1.75 | $14 | 2026-10-10 |
|  | openai | $1.75 | $14 | 2026-10-10 |
|  | openrouter | $1.75 | $14 | 2026-10-10 |
| [GPT-5.4 mini](https://noometry.com/models/gpt-5-4-mini) | azure | $0.75 | $4.50 | 2026-10-10 |
|  | openai | $0.75 | $4.50 | 2026-10-10 |
|  | openrouter | $0.75 | $4.50 | 2026-10-10 |
| [o3-pro](https://noometry.com/models/o3-pro) | openai | $20 | $80 | 2026-10-10 |
|  | openrouter | $20 | $80 | 2026-10-10 |
| [GPT-5.3 Chat](https://noometry.com/models/gpt-5-3-chat) | openai | $1.75 | $14 | 2026-10-10 |
| [GPT-5.2 Codex](https://noometry.com/models/gpt-5-2-codex) | azure | $1.75 | $14 | 2026-10-10 |
|  | openrouter | $1.75 | $14 | 2026-10-10 |
| [GPT-5.4 nano](https://noometry.com/models/gpt-5-4-nano) | azure | $0.20 | $1.25 | 2026-10-10 |
|  | openai | $0.20 | $1.25 | 2026-10-10 |
|  | openrouter | $0.20 | $1.25 | 2026-10-10 |
| [GPT-5 Mini](https://noometry.com/models/gpt-5-mini) | azure | $0.25 | $2 | 2026-10-10 |
|  | openai | $0.25 | $2 | 2026-10-10 |
|  | openrouter | $0.25 | $2 | 2026-10-10 |
| [o4-mini](https://noometry.com/models/o4-mini) | azure | $1.10 | $4.40 | 2026-10-10 |
|  | openai | $1.10 | $4.40 | 2026-10-10 |
|  | openrouter | $1.10 | $4.40 | 2026-10-10 |
| [o1](https://noometry.com/models/o1) | azure | $15 | $60 | 2026-10-10 |
|  | openai | $15 | $60 | 2026-10-10 |
|  | openrouter | $15 | $60 | 2026-10-10 |
| [GPT-5.1-Codex](https://noometry.com/models/gpt-5-1-codex) | azure | $1.25 | $10 | 2026-10-10 |
|  | openrouter | $1.25 | $10 | 2026-10-10 |
| [GPT-5-Codex](https://noometry.com/models/gpt-5-codex) | azure | $1.25 | $10 | 2026-10-10 |
| [o3-mini](https://noometry.com/models/o3-mini) | azure | $1.10 | $4.40 | 2026-10-10 |
|  | openai | $1.10 | $4.40 | 2026-10-10 |
|  | openrouter | $1.10 | $4.40 | 2026-10-10 |
| [gpt-oss-120b](https://noometry.com/models/gpt-oss-120b) | bedrock | $0.15 | $0.60 | 2026-10-10 |
|  | cerebras | $0.35 | $0.75 | 2026-10-10 |
|  | deepinfra | $0.037 | $0.17 | 2026-10-10 |
|  | fireworks | $0.15 | $0.60 | 2026-10-10 |
|  | groq | $0.15 | $0.60 | 2026-10-10 |
|  | openrouter | $0.037 | $0.17 | 2026-10-10 |
|  | together | $0.15 | $0.60 | 2026-10-10 |
|  | vertex | $0.09 | $0.36 | 2026-10-10 |
| [GPT-4.1](https://noometry.com/models/gpt-4-1) | azure | $2 | $8 | 2026-10-10 |
|  | openai | $2 | $8 | 2026-10-10 |
|  | openrouter | $2 | $8 | 2026-10-10 |
| [GPT-4.1 mini](https://noometry.com/models/gpt-4-1-mini) | azure | $0.40 | $1.60 | 2026-10-10 |
|  | openai | $0.40 | $1.60 | 2026-10-10 |
|  | openrouter | $0.40 | $1.60 | 2026-10-10 |
| [GPT-5 Nano](https://noometry.com/models/gpt-5-nano) | azure | $0.05 | $0.40 | 2026-10-10 |
|  | openai | $0.05 | $0.40 | 2026-10-10 |
|  | openrouter | $0.05 | $0.40 | 2026-10-10 |
| [gpt-oss-20b](https://noometry.com/models/gpt-oss-20b) | bedrock | $0.07 | $0.30 | 2026-10-10 |
|  | deepinfra | $0.03 | $0.14 | 2026-10-10 |
|  | groq | $0.075 | $0.30 | 2026-10-10 |
|  | openrouter | $0.018 | $0.09 | 2026-10-10 |
|  | vertex | $0.07 | $0.25 | 2026-10-10 |
| [o1-pro](https://noometry.com/models/o1-pro) | openai | $150 | $600 | 2026-10-10 |
|  | openrouter | $150 | $600 | 2026-10-10 |
| [GPT-4 Turbo](https://noometry.com/models/gpt-4-turbo) | azure | $10 | $30 | 2026-10-10 |
|  | openai | $10 | $30 | 2026-10-10 |
|  | openrouter | $10 | $30 | 2026-10-10 |
| [GPT-4](https://noometry.com/models/gpt-4) | openai | $30 | $60 | 2026-10-10 |
|  | openrouter | $30 | $60 | 2026-10-10 |
| [GPT-4o](https://noometry.com/models/gpt-4o) | azure | $2.50 | $10 | 2026-10-10 |
|  | openai | $2.50 | $10 | 2026-10-10 |
|  | openrouter | $2.50 | $10 | 2026-10-10 |
| [GPT-4.1 nano](https://noometry.com/models/gpt-4-1-nano) | azure | $0.10 | $0.40 | 2026-10-10 |
|  | openai | $0.10 | $0.40 | 2026-10-10 |
|  | openrouter | $0.10 | $0.40 | 2026-10-10 |
| [GPT-4o mini](https://noometry.com/models/gpt-4o-mini) | azure | $0.15 | $0.60 | 2026-10-10 |
|  | openai | $0.15 | $0.60 | 2026-10-10 |
|  | openrouter | $0.15 | $0.60 | 2026-10-10 |
| [GPT-3.5-turbo](https://noometry.com/models/gpt-3-5-turbo) | azure | $0.50 | $1.50 | 2026-10-10 |
|  | openai | $0.50 | $1.50 | 2026-10-10 |
|  | openrouter | $0.50 | $1.50 | 2026-10-10 |
| [GPT-5.1-Codex-mini](https://noometry.com/models/gpt-5-1-codex-mini) | azure | $0.25 | $2 | 2026-10-10 |
|  | openrouter | $0.25 | $2 | 2026-10-10 |
| [GPT-5.3 Codex Spark](https://noometry.com/models/gpt-5-3-codex-spark) | openai | $1.75 | $14 | 2026-10-10 |
| [GPT-5.6](https://noometry.com/models/gpt-5-6) | openai | $4 | $20 | 2026-10-10 |
| [GPT-5.6 Luna Pro](https://noometry.com/models/gpt-5-6-luna-pro) | openrouter | $0.20 | $1.20 | 2026-10-10 |
| [GPT-5.6 Sol Pro](https://noometry.com/models/gpt-5-6-sol-pro) | openrouter | $2 | $10 | 2026-10-10 |
| [GPT-5.6 Terra Pro](https://noometry.com/models/gpt-5-6-terra-pro) | openrouter | $2 | $12 | 2026-10-10 |
| [GPT-6.1 Sol Pro](https://noometry.com/models/gpt-6-1-sol-pro) | openrouter | $2 | $10 | 2026-10-10 |
| [GPT-6 Astra Pro](https://noometry.com/models/gpt-6-astra-pro) | openrouter | $10 | $50 | 2026-10-10 |
| [GPT-6 Luna Pro](https://noometry.com/models/gpt-6-luna-pro) | openrouter | $0.10 | $0.50 | 2026-10-10 |
| [GPT-6 Sol Pro](https://noometry.com/models/gpt-6-sol-pro) | openrouter | $2 | $10 | 2026-10-10 |

## Frequently asked questions

### How much does the OpenAI API cost?

OpenAI API prices run from $0.018 per million input tokens (gpt-oss-20b) to $150 (o1-pro). Its highest-ranked model, GPT-6 Astra, costs $10 input and $50 output per million tokens.

### Does OpenAI discount cached input?

Yes. Cached input is billed at a lower rate on 41 of the 51 priced models; the cached rate is listed next to each model.