# Alternatives to Cloudflare Agents SDK

Canonical: https://theagenticweekly.com/alternatives/cloudflare-agents · Last updated: 2026-11-11 · Author: Agentic Weekly (operated independently from Texas, US) · Cloudflare Agents SDK evidence: Reported (not run by us)

> 12 alternatives to Cloudflare Agents SDK that we cover: Mastra, OpenAI Agents SDK, LangGraph, Semantic Kernel, Langflow, Botpress, Gumloop, Lindy, Microsoft Copilot Studio, Pydantic AI, Relevance AI, Voiceflow. Skip Cloudflare Agents SDK if: You need a stable API: the package is pre-1.0 and three of the last four releases had breaking changes; You do not want to run on Cloudflare.

## At a glance

| Tool | Evidence | Pricing | Latest version we cover | Last verified |
|---|---|---|---|---|
| Cloudflare Agents SDK | Reported (not run by us) | Not verified | agents@0.33.0 | 2026-11-11 |
| Mastra | Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)) | Not verified | @mastra/core@1.79.0 | 2026-10-25 |
| OpenAI Agents SDK | Tested (smoke test, 2026-10-25, local Qwen2.5-3B-Instruct, not vendor models) | Not verified | v0.24.0 | 2026-10-25 |
| LangGraph | Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)) | Not verified | 1.2.17 | 2026-10-25 |
| Semantic Kernel | Reported (not run by us) | Official page, dated | python-1.47.0 | 2026-10-25 |
| Langflow | Tested (smoke test, 2026-10-26, no LLM involved) | Partly verified | n/a | 2026-10-26 |
| Botpress | Reported (not run by us) | Official page, dated | n/a | 2026-10-25 |
| Gumloop | Reported (not run by us) | Official page, dated | n/a | 2026-10-25 |
| Lindy | Reported (not run by us) | Official page, dated | n/a | 2026-10-25 |
| Microsoft Copilot Studio | Reported (not run by us) | Not verified | n/a | 2026-10-25 |
| Pydantic AI | Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)) | Official page, dated | n/a | 2026-10-25 |
| Relevance AI | Reported (not run by us) | Not verified | n/a | 2026-10-25 |
| Voiceflow | Reported (not run by us) | Not verified | n/a | 2026-10-25 |

## Mastra

Evidence: Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)). A strong TypeScript option if you are building agents in a Node stack; read the breaking-change note on sessions before upgrading.

Pick Mastra if: TypeScript and Next.js teams building agents; Teams that need observability and tracing out of the box.

- Write-up: https://theagenticweekly.com/tools/mastra
- For agent building: Mastra is #6, Cloudflare Agents SDK is not ranked. (editorial ranks)

## OpenAI Agents SDK

Evidence: Tested (smoke test, 2026-10-25, local Qwen2.5-3B-Instruct, not vendor models). Pick it if you want a small, official framework for multi-agent flows on the OpenAI API; the update is incremental.

Pick OpenAI Agents SDK if: Python developers building agents on OpenAI models; Teams that want MCP tools plus approvals and sessions.

- Write-up: https://theagenticweekly.com/tools/openai-agents-sdk
- For agent building: OpenAI Agents SDK is #2, Cloudflare Agents SDK is not ranked. (editorial ranks)

## LangGraph

Evidence: Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)). A dependable foundation for stateful agents; this release is a routine fix, so only update if the RemoteGraph or recursion fixes affect you.

Pick LangGraph if: Developers who want explicit control over agent state and flow; Teams running long-lived, resumable agents.

- Write-up: https://theagenticweekly.com/tools/langgraph
- For agent building: LangGraph is #3, Cloudflare Agents SDK is not ranked. (editorial ranks)

## Semantic Kernel

Evidence: Reported (not run by us). Microsoft's model-agnostic SDK for building AI agents; its README calls Microsoft Agent Framework the enterprise-ready successor.

Pick Semantic Kernel if: Existing .NET and Azure shops already on Semantic Kernel.

- Write-up: https://theagenticweekly.com/tools/semantic-kernel
- For agent building: neither Semantic Kernel nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Langflow

Evidence: Tested (smoke test, 2026-10-26, no LLM involved). MIT-licensed visual builder for AI agents and MCP servers with a very large GitHub following.

Pick Langflow if: Visual prototyping of RAG and agents; Exposing flows as MCP servers.

- Write-up: https://theagenticweekly.com/tools/langflow
- For agent building: neither Langflow nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Botpress

Evidence: Reported (not run by us). Customer-support AI agent platform with a free plan and conversation-based paid plans.

Pick Botpress if: Support teams wanting AI agents with per-conversation costs.

- Write-up: https://theagenticweekly.com/tools/botpress
- For agent building: neither Botpress nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Gumloop

Evidence: Reported (not run by us). Agent builder for teams; plans start at $37 per month with 20k included credits.

Pick Gumloop if: Teams letting non-engineers build agents with IT controls.

- Write-up: https://theagenticweekly.com/tools/gumloop
- For agent building: neither Gumloop nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Lindy

Evidence: Reported (not run by us). AI 'employee' builder that connects to your tools; Free plan with $50 in credits that last 7 days, then credit-based plans.

Pick Lindy if: Non-technical teams automating assistant-style work.

- Write-up: https://theagenticweekly.com/tools/lindy
- For agent building: neither Lindy nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Microsoft Copilot Studio

Evidence: Reported (not run by us). Microsoft's platform for creating and managing custom agents, workflows and apps with no code.

Pick Microsoft Copilot Studio if: Microsoft 365 organizations building internal agents.

- Write-up: https://theagenticweekly.com/tools/copilot-studio
- For agent building: neither Microsoft Copilot Studio nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Pydantic AI

Evidence: Tested (smoke test, 2026-10-25, local 3B model (Qwen2.5-3B)). Python agent framework built on Pydantic types, covering agents, realtime voice, image generation and embeddings.

Pick Pydantic AI if: Python teams that value type safety and validation.

- Write-up: https://theagenticweekly.com/tools/pydantic-ai
- For agent building: neither Pydantic AI nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Relevance AI

Evidence: Reported (not run by us). Platform for specialist AI agents for sales, customer success, marketing and HR, with an embedded deployment team.

Pick Relevance AI if: Go-to-market teams wanting managed agent rollout.

- Write-up: https://theagenticweekly.com/tools/relevance-ai
- For agent building: neither Relevance AI nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## Voiceflow

Evidence: Reported (not run by us). Platform for chat and voice AI agents for customer experience teams.

Pick Voiceflow if: CX teams building chat and voice agents.

- Write-up: https://theagenticweekly.com/tools/voiceflow
- For agent building: neither Voiceflow nor Cloudflare Agents SDK has an editorial rank in this category. (editorial ranks)

## How to cite

Agentic Weekly, "Alternatives to Cloudflare Agents SDK", last updated 2026-11-11, https://theagenticweekly.com/alternatives/cloudflare-agents