GPT 5.4 Pro 2026 03 05
openai/gpt-5.4-pro-2026-03-05GPT 5.4 Pro 2026 03 05 (openai/gpt-5.4-pro-2026-03-05) is an AI model from OpenAI with a 1,050,000-token context window and 128,000 max output tokens, priced at $30.00/1M input and $180.00/1M output tokens. Available via the haimaker.ai OpenAI-compatible API.
Overview
OpenAI's GPT-5 Pro variant with extended compute for expert-level reasoning across science, math, and code.
Features & Capabilities
| Mode | responses |
| Context Window | 1,050,000 tokens |
| Max Output | 128,000 tokens |
| Function Calling | Supported |
| Vision | Supported |
| Reasoning | Supported |
| Web Search | Supported |
| Url Context | - |
API Usage
from openai import OpenAI
client = OpenAI(
base_url="https://api.haimaker.ai/v1",
api_key="YOUR_API_KEY",
)
response = client.chat.completions.create(
model="openai/gpt-5.4-pro-2026-03-05",
messages=[
{"role": "user", "content": "Hello, how are you?"}
],
)
print(response.choices[0].message.content)Frequently Asked Questions
What is the context window of GPT 5.4 Pro 2026 03 05?
GPT 5.4 Pro 2026 03 05 (openai/gpt-5.4-pro-2026-03-05) has a 1,050,000-token context window and supports up to 128,000 output tokens per request.
How much does GPT 5.4 Pro 2026 03 05 cost?
GPT 5.4 Pro 2026 03 05 is priced at $30.00 per 1M input tokens and $180.00 per 1M output tokens when accessed via the haimaker.ai OpenAI-compatible API.
What features does GPT 5.4 Pro 2026 03 05 support?
GPT 5.4 Pro 2026 03 05 supports function calling, vision, reasoning, web search.
How do I use GPT 5.4 Pro 2026 03 05 via API?
Send requests to https://api.haimaker.ai/v1/chat/completions with model "openai/gpt-5.4-pro-2026-03-05" using any OpenAI-compatible SDK. Authentication uses a Bearer API key from https://app.haimaker.ai.
Use GPT 5.4 Pro 2026 03 05 with the haimaker API
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