Agentic gpt Planning
Decompose high-level goals into sub-tasks with a 95% success rate in autonomous tool orchestration.
gpt-5-chat
The gpt 5 chat model represents OpenAI's latest leap in reasoning and native multimodality. With a 256k context window and agentic planning, gpt 5 chat solves complex coding and scientific challenges with unparalleled accuracy.
$ 0.875
$ 1.25
text
$ 7
$ 10
text
API
Text To Text (Response)
curl --request POST "https://gptproto.com/v1/responses" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"model": "gpt-5-chat",
"input": [
{
"role": "user",
"content": [
{
"type": "input_text",
"text": "Write a short poem about artificial intelligence and its impact on humanity."
}
]
}
]
}'Text to Text (Chat)
curl --request POST "https://gptproto.com/v1/chat/completions" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"model": "gpt-5-chat",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"stream": false
}'gpt 5 chat Core Model Capabilities
Explore the technical breakthroughs in gpt 5 chat that enable superior reasoning and reliability.
gpt 5 chat Coding Excellence
Achieve 91.2% on HumanEval benchmarks, enabling complex refactoring and multi-file architecture.
Structured gpt JSON Outputs
Ensure 100% adherence to nested JSON schemas for direct ingestion by production databases and APIs.
Native Multimodal Tokenization
This gpt model treats video and audio as native tokens, allowing for 40% better temporal reasoning accuracy.
How to Get a gpt-5-chat API Key
Getting a gpt-5-chat API key takes four steps and a few minutes. Create a free GPTProto account, add credits, generate your key, and make your first call — at $0.875 / $7 it's a cheaper gpt-5-chat API key than going direct, and one key works across every model on the platform. Full gpt-5-chat Documentation is in the docs.
Sign up
Create your free GPT Proto account to begin. You can set up an organization for your team at any time.
Top up
Your balance can be used across all models on the platform, including gpt-5-chat, giving you the flexibility to experiment and scale as needed.
Generate your API key
In your dashboard, create an API key — you'll need it to authenticate when making requests to gpt-5-chat.
Make your first API call
Use your API key with our sample code to send a request to gpt-5-chat via GPT Proto and see instant AI-powered results.
gpt 5 chat FAQ: Pricing & Features
Find answers about gpt 5 chat integration, multimodal capabilities, and how gpt 5 chat improves developer workflows on our platform.
How do I migrate to gpt 5 chat from GPT-4o?
The gpt 5 chat model is 100% backwards compatible with the OpenAI Chat Completions and Responses APIs. To migrate, simply update your model parameter to gpt-5-chat in your API calls. This gpt transition requires no schema changes, though you may want to adjust your prompts to take advantage of the new gpt reasoning_effort parameter for better logic.
Is data sent to gpt 5 chat used for training?
No. When you access gpt through our enterprise API, your data is never used to train gpt 5 chat or any other underlying gpt models. We prioritize data privacy and security, ensuring that all gpt interactions remain confidential and compliant with enterprise standards.
What is the typical gpt 5 chat latency?
The gpt 5 chat model has an average Time To First Token (TTFT) of approximately 400ms. While this gpt version uses more parameters for reasoning than smaller models, its efficiency for complex tasks often reduces the need for multiple gpt calls, leading to faster overall workflow completion.
Does gpt 5 chat support native video analysis?
Yes, gpt 5 chat features native multimodal tokenization. This allows gpt to identify specific movements or temporal events in video files with 40% higher accuracy than previous gpt versions. It treats audio and video as native gpt tokens for seamless reasoning.
What is the gpt 5 chat context window limit?
The gpt 5 chat model supports a context window of 256,000 tokens. This allows gpt to process entire codebases or long scientific papers while maintaining near-perfect 99.9% recall, making gpt 5 chat ideal for long-form data synthesis and retrieval.
Can I get enterprise billing for gpt 5 chat?
Yes, GPTProto offers unified enterprise billing for gpt 5 chat. We support monthly invoicing, volume-based gpt discounts, and consolidated rate limits across multiple gpt providers to ensure high uptime and simplified management for your gpt deployments.
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