Claude Mythos Preview vs Microsoft Agent Framework 1.0
Which one should you pick? Here's the full breakdown.
Claude Mythos Preview
Anthropic's most capable model -- a gated research preview via Project Glasswing, cybersecurity-specialized. 73% success on expert CTF tasks, 32-step autonomous network attacks. Not generally available.
Microsoft Agent Framework 1.0
Microsoft's MIT-licensed open-source agent orchestration framework -- GA on 2026-04-03. Merges Semantic Kernel and AutoGen into a single SDK. Python and .NET. Native MCP and A2A protocol support. Connectors for Foundry, Azure OpenAI, OpenAI, Claude, Bedrock, Gemini, Ollama
| Category | Claude Mythos Preview | Microsoft Agent Framework 1.0 |
|---|---|---|
| Ease of Use | 2.0 | 6.0 |
| Output Quality | 10.0 | 8.5 |
| Value | 5.0 | 10.0 |
| Features | 9.0 | 9.0 |
| Overall | 6.5 | 8.4 |
Pricing Comparison
| Feature | Claude Mythos Preview | Microsoft Agent Framework 1.0 |
|---|---|---|
| Free Tier | No | Yes |
| Starting Price | Invite only | $0 |
Which Should You Pick?
Pick Claude Mythos Preview if...
- ✓Higher output quality (10 vs 8.5)
Partner organizations in Project Glasswing doing cybersecurity research, defensive red-teaming, threat intelligence, or large-scale vulnerability triage. If your use case is legitimate cybersecurity and you have enterprise Anthropic contact, ask about Glasswing admission.
Visit Claude Mythos PreviewPick Microsoft Agent Framework 1.0 if...
- ✓Easier to use (6 vs 2)
- ✓Better value for money (10/10)
- ✓Has a free tier
Enterprise developers on .NET or mixed Python + .NET stacks who want an MIT-licensed agent orchestration framework with real enterprise credibility. Also good for Azure Foundry customers who want first-class native integration. Teams migrating from Semantic Kernel or AutoGen should plan the move to Microsoft Agent Framework 1.0 now rather than later.
Visit Microsoft Agent Framework 1.0Our Verdict
Microsoft Agent Framework 1.0 is the clear winner here with 8.4/10 vs 6.5/10. Claude Mythos Preview isn't bad, but Microsoft Agent Framework 1.0 outperforms it across the board. Pick Claude Mythos Preview only if partner organizations in project glasswing doing cybersecurity research, defensive red-teaming, threat intelligence, or large-scale vulnerability triage.