Multimodal AI — Vision, Audio, Video

👁️ Vision AI

• GPT-4o — image understanding, OCR, chart
• Claude 3.5 Sonnet — best for document, diagram
• Gemini 1.5 Pro — long video understanding
• Llama 3.2 Vision — open source

💻 Vision API Example

from openai import OpenAI
import base64

client = OpenAI()
with open("invoice.png", "rb") as f:
    image_data = base64.b64encode(f.read()).decode()

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Extract invoice data as JSON"},
            {"type": "image_url",
             "image_url": {"url": f"data:image/png;base64,{image_data}"}}
        ]
    }]
)

🎙️ Audio AI

• Whisper (OpenAI) — speech-to-text, 100+ language
• ElevenLabs — voice clone, TTS premium
• OpenAI TTS — 6 voice, fast
• Deepgram — real-time streaming STT
• AssemblyAI — diarization, sentiment

# Whisper transcription
import openai
audio = open("podcast.mp3", "rb")
transcript = openai.audio.transcriptions.create(
    model="whisper-1",
    file=audio,
    language="bn"  # Bengali
)
print(transcript.text)

🎬 Video Generation

• Runway Gen-3 — text/image-to-video
• Pika 1.5 — affordable, fast
• Sora (OpenAI) — coming soon
• Kling — Chinese, very good quality
• Luma Dream Machine — free tier

🎨 Image Generation

• Midjourney v6 — best aesthetic
• DALL-E 3 — best instruction follow
• Flux — open source, photoreal
• Stable Diffusion 3 — local, free
• Ideogram — text in image perfect

🎯 Real Use Cases

1. Document AI — invoice, receipt extraction
2. Accessibility — image to alt-text
3. Meeting transcription + summary
4. Marketing video at scale
5. Product photography (AI-gen)
6. Voice agent (real-time STT+LLM+TTS)

🎓 মূল কথা ⭐

Multimodal = next frontier। Text-only AI obsolete হবে শীঘ্রই। Vision API দিয়ে শুরু করুন — easiest entry। Voice agent 2025-এ explode করবে।