pump at 0.005 was major resistance and it's logical that this takes some time to consolidate here
anything above 0.004 is good consolidation
LTF structure is pretty ugly on this one but HTF is still pretty intact
GLM-5.2 is now just 0.005 away from Fable-5 in visual spec-to-app development.
On VISTA’s latest C4 leaderboard:
🥇 Claude Code + Fable-5 — 0.274
🥈 Claude Code + GLM-5.2 — 0.269
🥉 Claude Code + Opus 4.8 — 0.263
Claude Code + Sonnet 4.6 — 0.248
Cursor + Composer 2.5 — 0.212
Codex + GPT-5.5 — 0.205
The story is no longer just “which model writes better code.”
For real app-building agents, performance is increasingly shaped by the full stack:
🧠 model
🛠️ harness
🔁 tool loop
👁️ visual understanding
⚙️ reasoning setup
The harness is becoming part of the model.
🔗