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gpt-4o API pricing & access
gpt-4o API pricing: $2.5 per 1M tokens. gpt-4o. Supports text, image input and text output. Listed specifications follow public ve…
gpt-4o API access
gpt-4o. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.
Compare supported API endpoints and capabilities, then access gpt-4o through the unified API gateway.
- Category
- text
- Context length
- 128000 tokens
- Maximum output
- 16384 tokens
- Supported APIs
- OpenAI Chat Completions API, Anthropic Messages API
- API endpoints
- POST /v1/chat/completions, POST /v1/messages
- Input modalities
- text, image
- Output modalities
- text
- Capabilities
- streaming, structured output, function calling, vision
gpt-4o API pricing
- Base input price
- $2.5 per 1M tokens
- Base output price
- $10 per 1M tokens
Base prices are shown in USD before group-specific adjustments. Open the live pricing page for current access-group prices.
About gpt-4o
gpt-4o accepts text and images and returns text, with documented Chat Completions and Responses support. It remains useful for maintaining and comparing established visual question answering, extraction and structured-response applications.
Image understanding on this ID is distinct from native image output and Realtime audio sessions. Separate direct model output from optional tool output, and revalidate message formats and structured fields during upgrades.
Official reference, checked 2026-10-14.
Use cases and prompting
- Use a clear source image and a focused question, asking for visible evidence.
- Define columns, units and unreadable values for table extraction and check samples against the image.
- Validate structured output, tool arguments and stream completion on the chosen endpoint.
- Compare the same test cases with gpt-5.4; check request and response formats in the API documentation.
How to call gpt-4o
gpt-4o is served through tbuy's unified gateway. Existing OpenAI or Anthropic SDK code keeps working: point base_url at https://modelsok.com and use your tbuy API key.
curl (OpenAI-compatible)
curl https://modelsok.com/v1/chat/completions \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "gpt-4o", "messages": [{"role": "user", "content": "Hello"}]}'Python (openai SDK)
from openai import OpenAI
client = OpenAI(base_url="https://modelsok.com/v1", api_key="YOUR_API_KEY")
response = client.chat.completions.create(
model="gpt-4o",
messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)Python (anthropic SDK)
from anthropic import Anthropic
client = Anthropic(base_url="https://modelsok.com", api_key="YOUR_API_KEY")
message = client.messages.create(
model="gpt-4o",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)Related pages
Frequently asked questions about gpt-4o
What is gpt-4o?
gpt-4o. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.
How do I call gpt-4o?
Create an API key with access to gpt-4o, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.
How is gpt-4o priced?
Pricing depends on the selected provider group and the model billing unit. Refer to the current input, output, request, or media prices in the pricing section.
What is the context window of gpt-4o?
The model catalog lists a context window of 128000 tokens. Check the selected endpoint for request limits.
What is the maximum output of gpt-4o?
The model catalog lists a maximum output of 16384 tokens. Your request settings may set a lower limit.
How should I evaluate gpt-4o for my project?
Start with the use cases and prompting guidance on this page, then evaluate the model with representative inputs from your project.