# GPT vs Gemini: API prices compared, dated and sourced

Canonical page: https://bertrande.com/en/vs/gpt-vs-gemini/
License: CC-BY-4.0, reuse with attribution and a link.

No value below was produced, estimated or completed by a language model. Every figure was read from a source we name, on the date we give.

The cheapest GPT model we track, gpt-5-nano, costs $0.400 per million output tokens and $0.050 per million input tokens. The cheapest Gemini model, Gemini 2.5 Flash-Lite, costs $0.400 per million output tokens and an input price that depends on the type of content. At the entry level, the two cost the same on output: $0.400 per million tokens. Prices read on 18 September 2026.

## GPT models

| Model | Input $/1M | Output $/1M | Read on |
|---|---|---|---|
| gpt-5-nano | $0.050 | $0.400 | 2026-09-18 |
| gpt-4.1-nano | $0.100 | $0.400 | 2026-09-18 |
| gpt-4o-mini | $0.150 | $0.600 | 2026-09-18 |
| gpt-5.6-luna | $0.200 | $1.20 | 2026-09-18 |
| gpt-5.4-nano | $0.200 | $1.25 | 2026-09-18 |
| gpt-3.5-turbo | $0.500 | $1.50 | 2026-09-18 |
| gpt-3.5-turbo-0125 | $0.500 | $1.50 | 2026-09-18 |
| gpt-4.1-mini | $0.400 | $1.60 | 2026-09-18 |
| gpt-5-mini | $0.250 | $2.00 | 2026-09-18 |
| gpt-3.5-turbo-1106 | $1.00 | $2.00 | 2026-09-18 |
| gpt-3.5-turbo-instruct | $1.50 | $2.00 | 2026-09-18 |
| o3-mini | $1.10 | $4.40 | 2026-09-18 |
| o4-mini | $1.10 | $4.40 | 2026-09-18 |
| gpt-5.4-mini | $0.750 | $4.50 | 2026-09-18 |
| gpt-4.1 | $2.00 | $8.00 | 2026-09-18 |
| o3 | $2.00 | $8.00 | 2026-09-18 |
| gpt-5 | $1.25 | $10.00 | 2026-09-18 |
| gpt-5.1 | $1.25 | $10.00 | 2026-09-18 |
| gpt-4o | $2.50 | $10.00 | 2026-09-18 |
| gpt-5.6-terra | $2.00 | $12.00 | 2026-09-18 |
| gpt-5.2 | $1.75 | $14.00 | 2026-09-18 |
| gpt-5.4 (<272K context length) | $2.50 | $15.00 | 2026-09-18 |
| gpt-4o-2024-05-13 | $5.00 | $15.00 | 2026-09-18 |
| gpt-5.6-sol | $4.00 | $20.00 | 2026-09-18 |
| gpt-5.5 (<272K context length) | $5.00 | $30.00 | 2026-09-18 |
| gpt-4-turbo-2024-04-09 | $10.00 | $30.00 | 2026-09-18 |
| gpt-6-astra | $10.00 | $50.00 | 2026-09-18 |
| o1 | $15.00 | $60.00 | 2026-09-18 |
| gpt-4-0613 | $30.00 | $60.00 | 2026-09-18 |
| o3-pro | $20.00 | $80.00 | 2026-09-18 |
| gpt-5-pro | $15.00 | $120 | 2026-09-18 |
| gpt-5.2-pro | $21.00 | $168 | 2026-09-18 |
| gpt-5.4-pro (<272K context length) | $30.00 | $180 | 2026-09-18 |
| gpt-5.5-pro (<272K context length) | $30.00 | $180 | 2026-09-18 |
| o1-pro | $150 | $600 | 2026-09-18 |

## Gemini models

| Model | Input $/1M | Output $/1M | Read on |
|---|---|---|---|
| Gemini 2.5 Flash-Lite | by content type | $0.400 | 2026-09-18 |
| Gemini 3.1 Flash-Lite | by content type | $1.50 | 2026-09-18 |
| Gemini 2.5 Flash | by content type | $2.50 | 2026-09-18 |
| Gemini 3.5 Flash-Lite | by content type | $2.50 | 2026-09-18 |
| Gemini 3 Flash Preview | by content type | $3.00 | 2026-09-18 |
| Gemini 3.6 Flash | $0.750 | $3.75 | 2026-09-18 |
| Gemini 3.7 Flash | $0.750 | $3.75 | 2026-09-18 |
| Gemini 3.8 Flash | $0.750 | $3.75 | 2026-09-18 |
| Gemini Robotics ER 1.6 Preview | by content type | $5.00 | 2026-09-11 |
| Gemini Robotics ER 2 Preview | by content type | $5.00 | 2026-09-17 |
| Gemini Robotics ER 2 Streaming Preview | by content type | $5.00 | 2026-09-17 |
| Gemini 3.5 Flash | $1.50 | $9.00 | 2026-09-18 |


Method: https://bertrande.com/en/methodology/
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