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Head to head · Agent frameworks · October 2026 research run

AgentOS vs Microsoft Agent Framework

Microsoft Agent Framework scores 82.2 (A) on agent readiness against AgentOS's 75.3 (BB), and leads in 6 of 7 scored categories. Both do agent frameworks.

AgentOSFramers Lab, Inc. · Agent framework BB75.3/100#46 of 629 Microsoft Agent FrameworkMicrosoft · Agent framework A82.2/100#6 of 629

Which one, for what

AgentOS BB

Good for TypeScript teams that want long-term memory, personas, voice and channel adapters and multi-agent teams in one package, and that will pin versions.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Version 0.12.12, with 27 releases on 7 and 8 October 2026 and breaking minors 0.11.0 and 0.12.0 on the same day

Microsoft Agent Framework A

Good for Teams on Azure or .NET, and for teams moving off AutoGen or Semantic Kernel, that want MCP, approval, checkpointed workflows and OpenTelemetry in one SDK.

Ahead on

  • Agent ergonomics, 87 against 74
  • Security & auth, 93 against 81
  • Transparency & trust, 83 against 64

Also in its favour

  • No key needed to call it

Watch for

Changes marked [BREAKING] shipped in minor releases of released packages, including agent-framework-core in 1.20.0 on 2 October 2026

Score by category

CategoryWeight this runAgentOSMicrosoft Agent FrameworkEdge
Reliability16%207778Microsoft Agent Framework +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29295Microsoft Agent Framework +3
Agent ergonomics13%16.27487Microsoft Agent Framework +13
Security & auth14%17.58193Microsoft Agent Framework +12
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88791Microsoft Agent Framework +4
Transparency & trust7%8.86483Microsoft Agent Framework +19
Negative events≤15-2-2
Total75.3 · BB82.2 · A

Facts side by side

FactAgentOSMicrosoft Agent Framework
KindAgent frameworkAgent framework
VendorFramers Lab, Inc.Microsoft
Hosted endpointno (local only)no (local only)
Transports
AuthAPI keyNone
PricingFreeFree
x402nono
LicenceApache-2.0MIT
Read-only variant documentednono
llms.txtyesno
Last release2026-10-082026-10-08
Terms last updated2025-11-06no document linked
Privacy policy last updated2025-11-06no document linked
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularity677 stars, 5.3k npm/wk14k stars, 48k PyPI/wk

Verdicts

AgentOS

A TypeScript agent framework with typed tools, six multi-agent strategies, checkpointed graphs, approval gates and no telemetry of its own. It is at 0.12.12 after 98 releases in 90 days, two of them breaking on 7 October 2026. No MCP client was found in the package, and code tools an agent writes run in an in-process node:vm context.

Microsoft Agent Framework

Python 1.21.0 and .NET 1.24.0 are MIT, past 1.0 and released about weekly, with an MCP client, tool approval, checkpointed graph workflows and OpenTelemetry. Breaking changes ship in minor releases, a version User-Agent and a feature-usage token are sent by default, and a high-severity advisory in the .NET declarative workflows package was published on 7 October 2026.

Before you call either

AgentOS

  1. Pin an exact version of @framers/agentos. Feature commits ship as patch releases while it is 0.x, and breaking changes ship as minors
  2. Leave emergentConfig.allowSandboxTools off unless forged code runs through an executor that isolates. The default executor shares the host process
  3. Pass your own ICheckpointStore to compile() for runs that must survive a restart. The default store is in memory
  4. Set hitl.approvals.beforeTool for tools that write, and choose a handler. No approval gate is on by default
  5. Use Node 22 or newer, and set a provider key such as OPENAI_API_KEY or ANTHROPIC_API_KEY. The provider is detected from the environment

Microsoft Agent Framework

  1. Pin exact versions. Minor releases have carried [BREAKING] changes, so read python/CHANGELOG.md or the upgrade guides before moving up
  2. Set approval_mode="always_require" on tools and MCP servers that write. The default is never_require
  3. Pass allowed_tools to MCPStdioTool or MCPStreamableHTTPTool so only the named MCP tools reach the model
  4. Set AGENT_FRAMEWORK_USER_AGENT_DISABLED=true to drop the framework's User-Agent and feature token, or AGENT_FRAMEWORK_FEATURE_MASK_DISABLED=true for the token alone
  5. On .NET, use Microsoft.Agents.AI.Workflows.Declarative 1.24.0 or later. Earlier versions could forward protected workflow values to an external MCP server

Questions

Which is better for AI agents, AgentOS or Microsoft Agent Framework?

Microsoft Agent Framework scores 82.2 (A) on agent readiness against AgentOS's 75.3 (BB), and leads in 6 of 7 scored categories.

Are AgentOS and Microsoft Agent Framework open source?

Yes. AgentOS is open source (Apache-2.0). Microsoft Agent Framework is open source (MIT).

Other comparisons with AgentOS or Microsoft Agent Framework

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