GPT-4o API

GPT-4o is a large language model by OpenAI, available on the Venice API as openai-gpt-4o-2024-11-20. Requests are anonymized, so the provider never sees your identity.OpenAI’s multimodal flagship model with vision capabilities, strong reasoning, and broad knowledge. Popular for its balanced performance across tasks. Version: 2024-11-20.

GPT-4o API pricing

Model ID	Variant	Privacy	Price
`openai-gpt-4o-2024-11-20`	Standard	Anonymized	$3.13 input /$ 12.50 output per 1M tokens

GPT-4o specifications

Spec	Value
Provider	OpenAI
Released	Feb 28, 2026
Privacy	Anonymized
Context window	125K tokens
Max output	16K tokens

How to use the GPT-4o API

Send requests to POST https://api.venice.ai/api/v1/chat/completions with "model": "openai-gpt-4o-2024-11-20" and your API key.

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai-gpt-4o-2024-11-20",
    "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }]
  }'

GPT-4o API FAQ

How much does the GPT-4o API cost?

3.13 per 1M input tokens and

12.50 per 1M output tokens. Prices are in USD and can be paid in DIEM at parity.

What is the GPT-4o model ID?

Use openai-gpt-4o-2024-11-20 as the model parameter.

Is the GPT-4o API private?

GPT-4o is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.

What is the context window of GPT-4o?

125K tokens of context, with up to 16K output tokens per response.

What does GPT-4o support?

GPT-4o supports function calling, structured outputs, image input and web search.

Which endpoint does the GPT-4o API use?

Call POST /chat/completions. /responses (Alpha) is also supported.

Related models

Gemini 3.1 Pro Preview API: $2.50 input /$ 15.00 output per 1M tokens
Claude Sonnet 5 API: $3.00 input /$ 15.00 output per 1M tokens
Claude Sonnet 4.6 API: $3.60 input /$ 18.00 output per 1M tokens
Aion 3.0 API: $3.75 input /$ 7.50 output per 1M tokens

Explore

By modality