Microsoft's open-source multi-agent framework — orchestrate conversations between specialised agents.
Multi-agentTool useCodeMemory
OpenAI Swarm vs Relay Agentswhich AI ops agent should you pick in 2026?
OpenAI's lightweight multi-agent reference implementation — handoff + routine patterns, educational.
Multi-agentTool use
Human-in-the-loop workflow agents that connect 100+ apps with approvals.
Tool useMemory
OpenAI Swarm vs Relay Agents — specs
| Spec | OpenAI Swarm | Relay Agents |
|---|---|---|
| Agent Rank | 65 / 100 (B) | 73 / 100 (A) |
| Autonomy | Autonomous | Semi-autonomous |
| Pricing | Free · OSS | Freemium · from $18 |
| Open source | Yes | No |
| Capabilities | Multi-agent, Tool use | Tool use, Memory |
| Integrations | 2 apps | 4 apps |
| Verified | Verified | Verified |
| Released | Oct 2024 | Mar 2025 |
Agent Rank breakdown
OpenAI Swarm
Agent Rank
65/ 100
- Autonomy fit
- 9
- Capabilities
- 4
- Integrations
- 2
- Pricing value
- 10
- Polish & maturity
- 7
- Verifiability
- 7
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Relay Agents
Agent Rank
73/ 100
- Autonomy fit
- 8
- Capabilities
- 4
- Integrations
- 8
- Pricing value
- 8
- Polish & maturity
- 6
- Verifiability
- 10
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Pros & cons
OpenAI Swarm
Relay Agents
Pros
- +Strongest human-in-the-loop pattern of any no-code agent
- +Connects 100+ apps with conditional logic and approval gates
- +Free tier is real — not a trial in disguise
Cons
- −AI features are lighter than purpose-built agent platforms
- −Per-seat pricing scales fast for larger teams
- −No native phone / voice support
Pricing
OpenAI Swarm
Relay Agents
Free
Free
Personal use
- +200 runs/mo
- +All app integrations
Recommended
Pro
$18/mo
Solo professionals
- +2,000 runs/mo
- +Multi-step approvals
- +Conditional branching
Team
$38/seat/mo
Small teams
- +Shared workflows
- +Audit log
- +Role-based access
Which one should you pick?
OpenAI Swarm
Pick OpenAI Swarm if cost is the main constraint or if you want the highest autonomy and the verification loop is in place.
Try OpenAI Swarm →Relay Agents
Pick Relay Agents if its specific capabilities (Tool use, Memory) match what you need.
Try Relay Agents →Affiliate links. We may earn a commission at no extra cost to you.
Frequently asked
Should I pick OpenAI Swarm or Relay Agents in 2026?+
Pick OpenAI Swarm if cost is the main constraint or if you want the highest autonomy and the verification loop is in place. Pick Relay Agents if its specific capabilities (Tool use, Memory) match what you need. Most working teams running both can use OpenAI Swarm for primary work and Relay Agents for the workflows where its specific strengths matter.
What's the price difference between OpenAI Swarm and Relay Agents?+
OpenAI Swarm starts at Free · OSS; Relay Agents starts at Freemium · from $18. OpenAI Swarm is the cheaper entry option. For team deployments the TCO can differ — use the AI Agent Rank TCO calculator for your specific volume.
Which is more autonomous, OpenAI Swarm or Relay Agents?+
OpenAI Swarm is the more autonomous of the two (Autonomous vs Semi-autonomous). Higher autonomy ships throughput faster but requires verification loops in place — see our autonomous-vs-copilot framing for when each tier wins.
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See more alternatives: alternatives to OpenAI Swarm · alternatives to Relay Agents
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