Provider: OpenAI
License: OpenAI API Terms of Use (proprietary, API-access only)
Access: API via OpenAI Platform and ChatGPT Pro
Modalities: Text, Image, Audio (input and output)
🔍 Overview
ChatGPT-4o (“Omni”) is OpenAI’s latest GPT-4-tier model released in May 2024. It introduces native multimodal capabilities — processing text, images, and audio inputs with unified architecture, all while significantly reducing latency and increasing efficiency.
Key advancements:
- 🧠 Unified Multimodal Model: Text, vision, and audio are handled in a single neural network
- ⚡ Faster than GPT-4 Turbo: Especially in streaming and interactive scenarios
- 🗣️ Voice I/O: Supports real-time speech-to-text and text-to-speech for conversational agents
- 👁️ Visual Reasoning: Enhanced OCR, chart reading, image understanding, and document analysis
⚙️ Technical Details
- Architecture: GPT-4-level transformer with unified multimodal processing
- Context Length: 128,000 tokens
- Modalities: Text, images (JPG, PNG, etc.), audio (WAV, MP3, etc.)
- Training: Proprietary reinforcement learning with human feedback (RLHF) and multimodal fine-tuning
🚀 Deployment
- API Endpoint:
gpt-4o(via OpenAI API) - Latency: 2x–3x faster than GPT-4 Turbo in common scenarios
- Voice Mode: Available in ChatGPT app with memory and custom instructions
- Pricing: Cheaper than GPT-4 Turbo — see pricing page