Model Fallbacks and Rate Limiting

This cluster focuses on enhancements and fixes related to model fallback configurations and rate limiting strategies within the AI agent framework.

19 PRs

feat models config cron Representative: #8390

#	Title	Author	Created	GitHub
4462	fix: prevent gateway crash when all auth profiles are in cooldown	garnetlyx	2026-01-30	View
8256	feat: Add rate limit strategy configuration	revenuestack	2026-02-03	View
8258	feat: Add smart model tiering for cost optimization	revenuestack	2026-02-03	View
8274	feat(cron): add payload.fallbacks support for isolated jobs	marcelomar21	2026-02-03	View
8390	feat: notify user when fallback model is used (#8182) rep	Glucksberg	2026-02-04	View
9486	feat(heartbeat): support primary/fallbacks model config	sauerdaniel	2026-02-05	View
11734	CLI: scope /model and /new prompt messaging to fallback-only paths	arimendelow	2026-02-08	View
13191	pi-embedded: enable failover when per-agent fallbacks are configured	zesty-clawd	2026-02-10	View
13658	fix: silent model failover with fallback notification	taw0002	2026-02-10	View
13686	Add opt-in rate limiting and token-based budgets for external API calls (#13615)	ShresthSamyak	2026-02-10	View
15859	Graceful fallback + transparent model-failure logging	wboudy	2026-02-14	View
16289	feat: heartbeat model fallback chain support	Unwatched2345	2026-02-14	View
16307	fix: surface billing/auth FailoverErrors as user-friendly messages	petter-b	2026-02-14	View
19114	feat(usage): add default model costs for session_status	Clawborn	2026-02-17	View
19252	fix(agents): continue model fallback on failover text payloads	mahsumaktas	2026-02-17	View
21657	feat(session_status): expose fallback metadata in tool details	confg-star	2026-02-20	View
22660	feat(agents): prioritize fallback-chain recovery and configurable re-probe in...	sauerdaniel	2026-02-21	View
23318	feat(agents): emit model:fallback hook event for fallback visibility (#22805)	anillBhoi	2026-02-22	View
23738	feat(fallback): first-class transition visibility + low-noise automated notices	SmithLabsLLC	2026-02-22	View