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fix: correct inaccurate download size estimates in starter models#8968

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Pfannkuchensack wants to merge 2 commits intoinvoke-ai:mainfrom
Pfannkuchensack:feat/starter-models-model-sizes
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fix: correct inaccurate download size estimates in starter models#8968
Pfannkuchensack wants to merge 2 commits intoinvoke-ai:mainfrom
Pfannkuchensack:feat/starter-models-model-sizes

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Summary

Verified model sizes against Hugging Face repositories and corrected 11 descriptions that had wrong or outdated download size estimates.

Key corrections:

  • T5-XXL base encoder: ~8GB → ~9.5GB
  • FLUX.2 VAE: ~335MB → ~168MB (was confused with FLUX.1 VAE)
  • FLUX.1 Krea dev: ~33GB → ~29GB (uses quantized T5, not full)
  • FLUX.2 Klein 4B/9B Diffusers: ~10GB/~20GB → ~16GB/~35GB
  • SD3.5 Medium/Large: ~15GB/~19G → ~16GB/~28GB
  • CogView4: ~29GB → ~31GB
  • Z-Image Turbo: ~30.6GB → ~33GB
  • FLUX.1 Kontext/Krea quantized: ~14GB → ~12GB

Merge Plan

Only Text changes.

Checklist

  • The PR has a short but descriptive title, suitable for a changelog
  • Tests added / updated (if applicable)
  • ❗Changes to a redux slice have a corresponding migration
  • Documentation added / updated (if applicable)
  • Updated What's New copy (if doing a release after this PR)

Verified model sizes against Hugging Face repositories and corrected
11 descriptions that had wrong or outdated download size estimates.

Key corrections:
- T5-XXL base encoder: ~8GB → ~9.5GB
- FLUX.2 VAE: ~335MB → ~168MB (was confused with FLUX.1 VAE)
- FLUX.1 Krea dev: ~33GB → ~29GB (uses quantized T5, not full)
- FLUX.2 Klein 4B/9B Diffusers: ~10GB/~20GB → ~16GB/~35GB
- SD3.5 Medium/Large: ~15GB/~19G → ~16GB/~28GB
- CogView4: ~29GB → ~31GB
- Z-Image Turbo: ~30.6GB → ~33GB
- FLUX.1 Kontext/Krea quantized: ~14GB → ~12GB
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