Armature vs Runtime
Which Agents AI tool is better in 2026?
Armature
Agent testing and observability for MCPs and CLIs across every model and harness.
Runtime
Sandboxed coding agents for everyone on your team — with guardrails and observability.
Side-by-side
Armature is cheaper to start; funding signals are comparable on both sides.
| Metric | Armature | Runtime |
|---|---|---|
| Taglinei | Agent testing and observability for MCPs and CLIs across every model and harness. | Sandboxed coding agents for everyone on your team — with guardrails and observability. |
| Foundedi | 2026 | 2026 |
| HQi | San Francisco, US | San Francisco, US |
| Employeesi | — | — |
| Neuron scorei | 55🏆 | 52 |
| Total fundingi | $500K | $500K |
| Latest roundi | Seed · Mar 2026 | Seed · Mar 2026 |
| Valuationi | — | — |
| Cheapest paid plani | From $79/mo🏆 | Pricing not disclosed |
| Free plani | ✗ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free trial · From $79/mo | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Armature and Runtime.
| Capability | Armature | Runtime |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Armature
- Higher Neuron score (55 vs 52)
- Lower starting price ($79/mo)
🔵 Strengths of Runtime
- Strong in AI Agents
Which should you choose?
Choose Armature if price matters most — it starts at Free trial · From $79/mo, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Runtime if you want the most established option — it has raised $500K, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Armature vs Runtime — which is better?
It depends on your priority. Armature is the leaner option; Runtime has broader feature depth. See the side-by-side table above.
Is Armature cheaper than Runtime?
Yes — Armature's cheapest paid plan is Free trial · From $79/mo, while Runtime's is Free trial.
Do Armature and Runtime offer free plans?
Armature: Free trial only. Runtime: Free trial only.
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