OpenAI

OpenAI offers 67 models through Lava’s AI Gateway, supporting Chat Completions, Embeddings, Text to Speech, Transcription, Image Generation. Authentication uses Authorization: Bearer. See the OpenAI API docs for provider-specific parameters.

Supports both managed (Lava’s API keys) and unmanaged (bring your own credentials) mode.

Quick Start

const response = await fetch('https://api.lava.so/v1/forward?u=https%3A%2F%2Fapi.openai.com%2Fv1%2Fchat%2Fcompletions', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    Authorization: `Bearer ${forwardToken}`,
  },
  body: JSON.stringify({
    model: 'gpt-5.5',
    messages: [{ role: "user", content: "Hello!" }],
  }),
});

Chat Completions

Target URL: https://api.openai.com/v1/chat/completions


Content Type	`application/json`
Streaming	Yes (set `stream: true` in request body)

Model	Input / 1M tokens	Output / 1M tokens
o1-pro	$150.00	$600.00
o1-pro-2025-03-19	$150.00	$600.00
gpt-5.5-pro	$30.00	$180.00
gpt-5.5-pro-2026-04-23	$30.00	$180.00
gpt-5.4-pro	$30.00	$180.00
gpt-4	$30.00	$60.00
gpt-4-0613	$30.00	$60.00
gpt-5.2-pro	$21.00	$168.00
o3-pro	$20.00	$80.00
o3-pro-2025-06-10	$20.00	$80.00
gpt-5-pro	$15.00	$120.00
o1	$15.00	$60.00
o1-2024-12-17	$15.00	$60.00
gpt-4-turbo	$10.00	$30.00
gpt-4-turbo-2024-04-09	$10.00	$30.00
gpt-5.5	$5.00	$30.00
gpt-5.5-2026-04-23	$5.00	$30.00
gpt-5.5-chat-latest	$5.00	$30.00
gpt-4o-2024-05-13	$5.00	$15.00
gpt-5.4	$2.50	$15.00
gpt-5.4-codex	$2.50	$15.00
gpt-4o	$2.50	$10.00
gpt-4o-2024-11-20	$2.50	$10.00
gpt-4o-2024-08-06	$2.50	$10.00
gpt-4.1	$2.00	$8.00
gpt-4.1-2025-04-14	$2.00	$8.00
o3	$2.00	$8.00
o3-2025-04-16	$2.00	$8.00
davinci-002	$2.00	$2.00
gpt-5.3-chat-latest	$1.75	$14.00
gpt-5.3-codex	$1.75	$14.00
gpt-5.2	$1.75	$14.00
gpt-5.2-chat-latest	$1.75	$14.00
gpt-3.5-turbo-instruct	$1.50	$2.00
gpt-5.1	$1.25	$10.00
gpt-5	$1.25	$10.00
gpt-5-2025-08-07	$1.25	$10.00
gpt-5-search-api	$1.25	$10.00
o4-mini	$1.10	$4.40
o4-mini-2025-04-16	$1.10	$4.40
o3-mini	$1.10	$4.40
o3-mini-2025-01-31	$1.10	$4.40
gpt-3.5-turbo-1106	$1.00	$2.00
gpt-5.4-mini	$0.75	$4.50
gpt-3.5-turbo	$0.50	$1.50
gpt-3.5-turbo-0125	$0.50	$1.50
gpt-4.1-mini	$0.40	$1.60
gpt-4.1-mini-2025-04-14	$0.40	$1.60
babbage-002	$0.40	$0.40
gpt-5-mini	$0.25	$2.00
gpt-5-mini-2025-08-07	$0.25	$2.00
gpt-5.4-nano	$0.20	$1.25
gpt-4o-mini	$0.15	$0.60
gpt-4o-mini-2024-07-18	$0.15	$0.60
gpt-4.1-nano	$0.10	$0.40
gpt-4.1-nano-2025-04-14	$0.10	$0.40
gpt-5-nano	$0.05	$0.40
gpt-5-nano-2025-08-07	$0.05	$0.40

Embeddings

Target URL: https://api.openai.com/v1/embeddings


Content Type	`application/json`
Streaming	No

Model	Input / 1M tokens	Output / 1M tokens
text-embedding-3-large	$0.13	Free
text-embedding-ada-002	$0.10	Free
text-embedding-3-small	$0.02	Free

Text to Speech

Target URL: https://api.openai.com/v1/audio/speech


Content Type	`application/json`
Streaming	No

Model	Input / 1M chars	Output / 1M chars
tts-1-hd	$30.00	Free
tts-1	$15.00	Free

Transcription

Target URL: https://api.openai.com/v1/audio/transcriptions


Content Type	`multipart/form-data`
Streaming	No

Model	Input / minute	Output / minute
whisper-1	$0.006	Free

Image Generation

Target URL: https://api.openai.com/v1/images/generations


Content Type	`application/json`
Streaming	No

Model	Input / 1M tokens	Output / 1M tokens
gpt-image-2	$5.00	Free
gpt-image-2-2026-04-21	$5.00	Free
gpt-image-1	$5.00	Free

Get Started

AI Gateway

AI Spend

Monetize

Integration

SDK

Cookbook

Comparisons

Quick Start

Chat Completions

Embeddings

Text to Speech

Transcription

Image Generation

Next Steps

All Providers

Forward Proxy

​Quick Start

​Chat Completions

​Embeddings

​Text to Speech

​Transcription

​Image Generation

​Next Steps

All Providers

Forward Proxy

Quick Start

Chat Completions

Embeddings

Text to Speech

Transcription

Image Generation

Next Steps