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🧬Understand Multimodal Models

Crack open the three real fusion patterns — early, late, and joint — so when you face a multimodal task at work, the choice between vision, OCR, or both becomes mechanical instead of guesswork.

Foundations14 drops~2-week path · 5–8 min/daytechnologyAImultimodalllm-internals

Phase 1What 'Multimodal' Actually Means

See why text-only models can't reason over images and what 'modality' actually means

4 drops
  1. A modality is a data shape, not a content type

    6 min

    A modality is a data shape, not a content type

  2. Text-only models can't see — they can only describe

    6 min

    Text-only models can't see — they can only describe

  3. Every multimodal model is one of three architectures

    7 min

    Every multimodal model is one of three architectures

  4. Image patches become tokens — that's the whole trick

    7 min

    Image patches become tokens — that's the whole trick

Phase 2Three Ways to Send a Chart

Send the same chart three ways and watch each strategy's strengths and blind spots emerge

5 drops
  1. One chart, three input strategies, three different answers

    6 min

    One chart, three input strategies, three different answers

  2. Send the raw image and watch where it shines

    7 min

    Send the raw image and watch where it shines

  3. OCR-only is precise about text and blind to layout

    6 min

    OCR-only is precise about text and blind to layout

  4. Image + caption is the production-grade default

    7 min

    Image + caption is the production-grade default

  5. Pick the strategy from the question, not the model

    7 min

    Pick the strategy from the question, not the model

Phase 3Inside the Fusion Architectures

Trace how vision encoders, audio tokenizers, and text get stitched into a shared space

4 drops
  1. A vendor pitches you a 'super accurate vision model.' What do you ask?

    7 min

    A vendor pitches you a 'super accurate vision model.' What do you ask?

  2. Your team wants to add voice to a multimodal product. Where do you start?

    7 min

    Your team wants to add voice to a multimodal product. Where do you start?

  3. Your search results return images that don't match the query

    7 min

    Your search results return images that don't match the query

  4. Your model gets simple chart questions right and complex ones wrong

    8 min

    Your model gets simple chart questions right and complex ones wrong

Phase 4Ship a Multimodal Decision

Pick a real multimodal task in your work and ship the right input strategy

1 drop
  1. Pick a real task and write its input strategy in one page

    8 min

    Pick a real task and write its input strategy in one page