Tier 1 uses forked Python subprocesses with seccomp, maintains a pool size of 20 with a 5 to 40 range, targets under 100 milliseconds P99 latency, provides process-level isolation, and is intended for arithmetic, strings, and simple algorithms.

| Tier 1 | Forked Python subprocesses + seccomp | 20 (5-40) | <100ms | Process-level | Arithmetic, strings, simple algorithms |

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

### Three-Tier Execution Model

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

Tier 1

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md