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lemony-ai/cascadeflow

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Cascadeflow

Cascadeflow is a runtime for AI agents that cuts language model spend by trying an inexpensive drafter model first, validating the answer, and escalating to a stronger verifier only when quality falls short. It also works as a budget and policy enforcement layer inside the agent loop, applying spending caps, compliance rules, and allow, switch-model, deny-tool, or stop actions at each step, with an audit trail of the decisions taken. Each call reports the model used, its cost, and the savings.

What sets it apart is how it plugs into existing code. It can run as a local gateway that speaks the OpenAI and Anthropic APIs, so existing clients gain cascading by changing only their endpoint. It also offers a LangChain chat model wrapper with chain, streaming, and tool support, plus integrations for other agent and workflow frameworks, including n8n nodes. Models from several hosted and local providers can be mixed in one cascade, and the same interface is available in Python and TypeScript. Routing can take into account the domain and complexity of a task, and weighted business priorities such as quality, cost, latency, and energy. Compliance gating can block models that break rules such as GDPR, HIPAA, or PCI.

Around that core, the project covers response validation (rule-based checks, embedding similarity scoring for relevance, and toxicity screening), per-run and per-user budgets with an observe-only mode for gradual rollout, and tracking of cascade costs and model calls without application code changes. It further includes tooling to discover and rank drafter and verifier pairs, routing for delegated subagents, multi-turn agent loops, and hybrid setups that handle most queries on local models and escalate to cloud providers when needed.

Features

  • Model Cascades - Tries a cheap drafter model first, validates its answer, and escalates to a stronger verifier only when needed to cut cost and latency.
  • Agent Authorization and Budget Controls - Applies spending caps, compliance rules, and business priorities inside the agent loop so every model and tool choice stays within set limits.
  • Agent Budget Enforcement - Applies per-run and per-user spending caps with automatic stop actions and an observe-only mode for gradual rollout.
  • Drop-In Gateway Proxies - Runs a local gateway speaking the OpenAI and Anthropic APIs so existing clients gain cascading by changing only their endpoint.

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3,926 stars·881 forks·Python·MIT·1 view
  • Cost-Aware Model Routers - Lets inexpensive models answer most queries while reserving flagship models for harder ones, cutting spend without losing quality.
  • Tiered Model Cascades - Runs a small cheap model first, checks its answer against quality thresholds, and escalates to a larger model only when validation fails.
  • LLM Operational Cost Optimization - Cuts language model spend by answering with inexpensive models first and escalating to stronger, costlier ones only when answer quality requires it.
  • Cost-Quality Model Routing - Routes each query to the most suitable model by domain and complexity and returns the answer with model used and total cost.
  • Agent Action Policies - Steers each agent step with allow, switch-model, deny-tool, or stop actions based on current context, budget, and policy state.
  • Agent Business Policy Injection - Embeds KPI weights and policy targets in the agent loop so live business priorities shape model and tool choices.
  • Agent Decision Records - Records a traceable decision for every model call, tool call, and handoff so teams can review and tune agent behavior.
  • Agent Framework Integrations - Adds cascading and cost control to existing agent and workflow tools through plugins, callbacks, or a drop-in gateway without rewriting application code.
  • Semantic Complexity Routing - Detects the domain and complexity of each task and routes it to the most suitable specialist model, per skill and per topic.
  • Model Access Policies - Blocks models that break rules such as GDPR, HIPAA, or PCI, or fall outside a strict allowlist, before any request runs.
  • AI Provider Orchestrators - Combines models from several hosted and local providers in one cascade through a single universal interface, including cross-provider tool calling.
  • Budget-Interrupted Run Recovery - Wraps an agent run in a session enforcing spending and tool-call limits, reporting cost, latency, energy, steps, and a full audit trail.
  • Cascading Chat Model Wrappers - Wraps a drafter and verifier into a single LangChain chat model that supports chains, streaming, and tools in Python and TypeScript.
  • LangChain Model Cascading Wrappers - Offers a LangChain chat model wrapper pairing a drafter and verifier, with chain, streaming, and tool support in Python and TypeScript.
  • Model Provider Routing - Sends each request to a suitable model across hosted and local providers, based on task domain, complexity, and quality checks.
  • Model Routing Gateways - Runs a local gateway speaking the OpenAI and Anthropic APIs that picks a model per request by domain, complexity, budget, and business priorities.
  • Priority-Weighted Model Selection - Feeds quality, cost, latency, and energy weights into every model selection decision to guide the final choice.
  • LLM Token Cost Tracking - Records total, drafter, and verifier spend plus token usage for each cascade call, with callbacks compatible with common cost tracking tools.
  • Routing Decision Audit Trails - Records a step-by-step trace of action, reason, chosen model, cost, budget state, and enforcement status for review and compliance.
  • Decision Auditing Hooks - Records a traceable step-by-step history of model choices, costs, and enforcement actions so teams can review and tune agent behavior.
  • Response Quality Gating - Checks each draft answer with rule-based, similarity, and toxicity validation so weak or unsafe replies are caught before escalation or delivery.
  • Response Quality Scoring - Checks each draft answer with automatic rules and optional similarity scoring to decide whether to accept it or escalate to a stronger model.
  • Star history

    Star history chart for lemony-ai/cascadeflowStar history chart for lemony-ai/cascadeflow

    How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

    Projects sharing features with Cascadeflow

    These projects share indexed features with Cascadeflow. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
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      This is a written reference for designing, building and operating production AI systems, aimed at engineers who work with large language models. It is organized as chapters, worked case studies and interview-preparation material rather than as installable software. The central topics are tool-using LLM agents, retrieval-augmented generation, cost and model selection, evaluation and observability, and security and compliance, with explicit trade-offs among latency, cost, accuracy and safety. The agent material covers control loops such as ReAct and plan-and-execute, graph-based orchestration,

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      Switchyard is a Rust library for routing large language model requests. For each request it chooses which model and provider should respond, balancing answer quality, cost, and response time rather than relying on one fixed model. It is aimed at coding assistants and agent harnesses, where it picks the best available model for each step and can show the chosen model in a tool's status line. Routing decisions come from composable strategies. A language model can judge whether a cheaper, more efficient model can handle a task, and that verdict selects the model tier. Execution signals, such as

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    • opensquilla/opensquillaopensquilla avatar

      opensquilla/opensquilla

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      OpenSquilla is an LLM agent orchestration framework designed to coordinate multi-step AI workflows and tool execution using directed acyclic graphs. It functions as a centralized system for managing specialized skill packages and executing complex reasoning sequences. The project distinguishes itself through a routing gateway that directs tasks to different AI providers based on complexity, cost, and performance. It utilizes a multi-tier AI memory system that organizes working, episodic, and semantic knowledge using local embeddings and SQLite, alongside a secure execution sandbox that isolat

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    • builderz-labs/mission-controlbuilderz-labs avatar

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      Mission Control is a self-hosted web dashboard that acts as a control plane for autonomous AI coding agents. It lets operators register and monitor a fleet of agents across runtimes, dispatch tasks to them, review their runs, and track token spend, all from one interface backed by role-based access and an audit log. Work reaches agents through priority queues, direct assignment, cron-driven recurring templates, and multi-step pipelines that chain one agent's output into the next. Agents claim the highest-priority task atomically, and completed work can be routed through a quality-review gate

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    Frequently asked questions

    What does lemony-ai/cascadeflow do?

    Cascadeflow is a runtime for AI agents that cuts language model spend by trying an inexpensive drafter model first, validating the answer, and escalating to a stronger verifier only when quality falls short. It also works as a budget and policy enforcement layer inside the agent loop, applying spending caps, compliance rules, and allow, switch-model, deny-tool, or stop actions at each step, with an audit trail of the decisions taken. Each call reports the model used, its…

    What are the main features of lemony-ai/cascadeflow?

    The main features of lemony-ai/cascadeflow are: Model Cascades, Agent Authorization and Budget Controls, Agent Budget Enforcement, Drop-In Gateway Proxies, Cost-Aware Model Routers, Tiered Model Cascades, LLM Operational Cost Optimization, Cost-Quality Model Routing.

    Which projects share features with lemony-ai/cascadeflow?

    Projects with overlapping indexed features include: ombharatiya/ai-system-design-guide — This is a written reference for designing, building and operating production AI systems, aimed at engineers who work… nvidia-nemo/switchyard — Switchyard is a Rust library for routing large language model requests. For each request it chooses which model and… opensquilla/opensquilla — OpenSquilla is an LLM agent orchestration framework designed to coordinate multi-step AI workflows and tool execution… builderz-labs/mission-control — Mission Control is a self-hosted web dashboard that acts as a control plane for autonomous AI coding agents. It lets… copilotkit/openbot — OpenBot is a self-hosted workspace where teams run AI bots as coworkers. Each bot gets its own isolated computer with… maiot-io/zenml — ZenML is an extensible machine learning orchestration framework designed to manage the end-to-end lifecycle of data…