CellaFlow vs Aster

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

CellaFlow compared with Aster
Detail	CellaFlow	Aster
What it does	The coordination and durability layer for AI agents	Intelligent Auto Routing
Stage	Not given	Growing
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	usage-based
Pricing	Not given	aster-work: $0.40 input / $0.80 output per million tokens. aster-code: $0.80 input / $1.60 output per million tokens. No subscription or seat fees. Prepaid credits start at $5 with no expiry. Routing included in product rates.
Key features	Durable Replay Recovery RocksDB Local Journaling Fenced Leases Append-only Execution Ledger Zero-Dependency Systems Runtime Hierarchical Sessions & State Reducers	Task-aware model routing Curated model collection
What makes it different	Prevents duplicate side effects across concurrent agents and retries with fenced idempotency leases Enables deterministic replay recovery without redundant token spend Low latency with 0.31ms marginal engine overhead	Reinforcement learning router trained on real task data 97.5% lower token cost vs frontier models Same product name regardless of underlying model
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	1	0
Citation Flow (Majestic)	14	11
Referring domains (Majestic)	22	23

3 details filled in for both companies.