GPT-4 is OpenAI's original fourth-generation model and the release that shifted the industry's expectations for large language model capability. With strong reasoning, broad factual knowledge, and reliable instruction compliance, it demonstrated substantial improvements over GPT-3.5 on complex tasks including professional-level exams, multi-step logical problems, and nuanced writing.
The base GPT-4 has an 8K token context window (with a 32K extended variant) and does not include native vision input in its standard form. It remains a mature, well-understood model with extensive third-party tooling built around it. For teams with workflows established on GPT-4, it offers predictability and stability, though successor models deliver better performance per cost.
Key Features
Strong multi-step reasoning and logical problem decomposition
Broad factual knowledge across science, law, medicine, and humanities
Reliable instruction-following for complex constrained tasks
Consistent structured output generation for downstream parsing
Function calling support for tool-augmented agentic tasks
High-quality multilingual text generation and translation
Ideal Use Cases
Complex reasoning tasks requiring deliberate multi-step logic
Professional-grade writing assistance for legal, medical, or technical domains
Chatbot and assistant products needing a trusted, stable model
Automated report drafting and document transformation pipelines
Educational platforms requiring accurate, nuanced explanations
Example Prompts for GPT-4
Technical Specifications
| Provider | OpenAI |
| Category | Text |
| Modality | Text -> Text |
| Context Window | 8K tokens |
| Training Cutoff | September 2021 |
API Usage
1 curl -X POST https://api.vincony.com/v1/chat/completions \ 2 -H "Authorization: Bearer YOUR_API_KEY" \ 3 -H "Content-Type: application/json" \ 4 -d '{ 5 "model": "openai/gpt-4", 6 "messages": [ 7 { "role": "user", "content": "Hello, GPT-4!" } 8 ] 9 }'
Replace YOUR_API_KEY with your Vincony API key. OpenAI-compatible endpoint — works with any OpenAI SDK.
Frequently Asked Questions
Try GPT-4 now
Start using GPT-4 instantly — 100 free credits, no credit card required. Access 800+ AI models through one platform.
More from OpenAI
Use ← → to navigate between models · Esc to go back
GPT-5.2
OpenAI's latest flagship with superior language understanding and generation.
GPT-5.2 Pro
Extended context and enhanced accuracy for professional workloads.
GPT-5.2 Chat
Optimized for multi-turn conversational interactions.
GPT-5.2 Codex
Top-tier code generation and software engineering assistant.