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NO.
#e17450c2
Topic
AGENTS & TOOLS
Source
Google AI Forum
Published
2026-05-29 11:33:02
Importance
★ 6/10 — radar 60
`Antigravity Ultra` users hit persistent `MODEL_CAPACITY_EXHAUSTED` on Claude Opus thinking
FIG-0171:1

`Antigravity Ultra` users hit persistent `MODEL_CAPACITY_EXHAUSTED` on Claude Opus thinking

Paid agent sessions can fail before real work starts. Treat Antigravity Ultra as capacity-risky for Claude-heavy workflows until routing improves.

[ KEY POINTS ]
  1. The backend returns 503 `MODEL_CAPACITY_EXHAUSTED` from cloudcode-pa.googleapis.com, so this is server capacity, not local quota.
  2. Failures recur after 1-29 seconds on multi-step agent tasks like file edits, bash runs, and code generation. Long tasks are unreliable.
  3. Server-Timing shows about 13s spent waiting for model capacity before failure. Retry loops burn time without changing the result.
  4. Multiple similar forum threads over nearly a month point to account or routing-level fragility, not a one-off client setup problem.
Originaldiscuss.ai.google.dev/t/persistent-model-capacity-exhausted-on-claude-opus-4-6-thinking-ultra-plan-unusable-since-day-1/167768Read original →

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