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gpt-5-chat

GPT-5-Chat is OpenAI's flagship multimodal chatbot interface powered by GPT-5, featuring adaptive reasoning (instant or chain-of-thought), 400K token context, reduced hallucinations (~45-80% fewer), and preset personalities (Cynic, Robot, Listener, Nerd). Excels in coding, writing, multilingual support, and real-world tasks via ChatGPT or API.

INPUT PRICE

$ 0.75
40% off
$ 1.25

Input / 1M tokens

text

OUTPUT PRICE

$ 6
40% off
$ 10

Input / 1M tokens

text

Chat

curl -X POST "https://gptproto.com/v1/chat/completions" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-5-chat",
  "messages": [
    {
      "role": "user",
      "content": "Who are you?"
    }
  ],
  "stream": false
}'

Response

curl --location 'https://gptproto.com/v1/responses' \
  -H "Authorization: sk-*****" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-5-chat",
  "input": [
    {
      "role": "user",
      "content": [
        {
          "type": "input_text",
          "text": "Write a short poem about artificial intelligence and its impact on humanity."
        }
      ]
    }
  ]
}'

Key Use Case Examples

Explore practical and diverse scenarios where gpt-5-chat/text-to-text delivers technical and business value.

Automated Chatbot Conversation Engine

A fintech startup integrated gpt-5-chat/text-to-text for its customer service chatbot. It maintains multi-turn context, answers nuanced financial queries, and escalates complex requests. The system saw a drop in average response time from 10 minutes to real time. It handles volume surges seamlessly, ensuring customer satisfaction during peak onboarding periods.

Large-Scale Document Summarization Tool

A global consulting firm deployed gpt-5-chat/text-to-text to summarize hundreds of compliance documents weekly. The model extracts key points while retaining factual accuracy, delivering ready-to-use executive summaries for compliance officers. It reduced manual labor by 70 percent and improved turnaround times for urgent regulatory reviews.

Knowledge Base Generation Automation

An online education platform used gpt-5-chat/text-to-text to automate FAQ and tutorial generation from course materials. The model creates consistent, student-friendly answers, keeping the database current with new content releases. This helped educators respond faster to learner queries and improved overall learner support metrics.

Get API Key

Getting Started with Gptproto — Build with gpt-5-chat in Minutes

Follow these simple steps to set up your account, get credits, and start sending API requests to gpt-5-chat via Gptproto.

Sign up

Sign up

Create your free Gptproto account to begin. You can set up an organization for your team at any time.

Top up

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

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

Make your first API call

Use your API key with our sample code to send a request to gpt-5-chat via Gptproto and see instant AI‑powered results.

Get API Key

Frequently Asked Questions

User Comments and Reviews

GPT-5-Chat | Multimodal Chatbot | GPT Proto API