gpt-5.1

Name: gpt-5.1 API
Brand: openai
Price: 0.875000 USD
Availability: InStock

GPT-5.1 · Per Token

gpt-5.1Available⚡Cache 89% off

ChatVisionTool UsePrompt CacheJSON ModeContext Window: 410KMax Output Tokens: 32K

Pricing

	Official Price	LemonData Price
Input	$1.25	$0.875
Output	$10.00	$7.00
Cache Read	$0.14	$0.14

Parameters

Context Window

410K tokens

Max Output Tokens

32K tokens

Best For

Chat

Conversational AI, customer support, and Q&A

Vision

Image understanding, document analysis, and visual reasoning

Cost Calculator

Monthly Input Tokens1M

Monthly Output Tokens0.5M

Estimated Monthly Cost$4.38

API Code Example

POST/v1/responses

API Format:

curl https://api.lemondata.cc/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-xxx" \
  -d '{
    "model": "gpt-5.1",
    "input": "Hello!"
  }'

FAQ

How much does gpt-5.1 cost?

On LemonData, gpt-5.1 costs $0.8750 per 1M input tokens and $7.0000 per 1M output tokens, which is up to 30% off the official pricing.

What is gpt-5.1 best for?

gpt-5.1 excels at Chat, Vision, Tool Use. Access it through LemonData's unified API with a single API key.

How to use gpt-5.1 API?

Get your API key from LemonData, set the base URL to api.lemondata.cc/v1, and use any OpenAI-compatible SDK. See the code examples above.

Related Models

Qwen3 / QwQ

Alibaba Cloud · 37 models

Doubao

ByteDance · 17 models