
RealReplicaBench
RealReplicaBench: Benchmarking Long-Horizon Agents in High-Fidelity, Stateful, and Reproducible Replicas of Real Online Services
The Lens
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
Updated Aug 2026
RealReplicaBench measures whether AI agents can finish long-horizon business workflows: 107 tasks across browser work, CLI tools, APIs, and document production, run against 14 Dockerized replicas of real SaaS systems so every run is deterministic and repeatable. The harness is Apache 2.0, the task data CC BY 4.0, free to run.
Running it is heavy in the way benchmarks are: Python 3.11, Docker, pinned runtime images, and API keys for every model you evaluate. The real cost is inference spend, since 107 long-horizon tasks across model families burns serious tokens.
This is an instrument for agent-framework developers and evaluation teams, not something anyone deploys. OSWorld, WebArena, and tau-bench are the peer benchmarks; SWE-bench is the coding-side equivalent.
The catch: it's published by Accio, Alibaba International's commercial agent product, and Accio's own harness competes on the leaderboard while not shipping in the repo, so those results can't be independently reproduced. The mock-service design is also both the feature and the limit: scores measure competence against Accio's model of these systems, not production reality.
Free vs Self-Hosted vs Paid
fully freeFree: The harness (Apache 2.0) and the task suite (CC BY 4.0, commercial use permitted with attribution).
The real cost: Inference. Evaluating a model across 107 long-horizon agent tasks is a serious token bill at whatever provider you're testing.
Commercial surface: Accio operates the hosted leaderboard and will evaluate proprietary models on request; no published pricing.
Free to run; the bill is the inference tokens each evaluation burns.
What to do by team size
- Solo
- free if you can afford the tokens
- Small team
- free; useful for harness comparisons
- Medium team
- free; treat vendor-harness rankings skeptically
- Large team
- free; reproduce results with your own runs before citing them
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Trust Signals
License: Apache License 2.0
Use freely. Patent grant included.
Commercial use: ✓ Yes
About
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