LLM Workload Migration & Cost Router
Model migrations like Claude Opus 5.5 deliver frontier reasoning at 40% lower execution cost. Plan your prompt caching, traffic split, and multi-model router to maximize performance per dollar.
| Pipeline | Traffic Share | Baseline Model | Migrated Target | Monthly Old | Monthly New | Savings |
|---|
How Model Migration Economics Work
When frontier releases arrive—such as Anthropic's Claude Opus 5.5—the primary operational victory is cost-to-intelligence density. Workloads that previously required prohibitive budgets for high-depth reasoning become viable for mainstream multi-agent loops.
This planner models three critical levers in modern production architectures:
- Unit Token Disinflation: Shifting high-order agent tasks from Legacy Opus 5 ($15 in / $75 out per MTok) to Opus 5.5 ($9 in / $45 out per MTok) yields an immediate 40% base drop.
- Prefix Prompt Caching: Large tool schemas, API documentation, and system instructions cached at the provider boundary cost up to 90% less on read operations.
- Async Batching: Non-interactive jobs (e.g. nocturnal document indexing, eval synthetic data generation) receive automated 50% discounts via batch queues.
Frequently Asked Questions
What are the benchmark rates used in this simulator?
Pricing reflects current frontier API schedules per million tokens (MTok): Opus 5 ($15 in, $75 out), Opus 5.5 ($9 in, $45 out — 40% reduction), Sonnet 3.5 ($3 in, $15 out), and Haiku 3.5 ($0.80 in, $4.00 out). Prompt cache hits receive an 85–90% discount on inputs.
Does switching to Opus 5.5 degrade agent reliability?
No. Independent evaluations indicate Opus 5.5 matches or exceeds Claude Fable 5.1 and Opus 5 on reasoning benchmarks, complex multi-step coding, and instruction-following while executing with lower TTFT and higher token generation speed.
Can I download and import this router plan into my proxy?
Yes. The "Export JSON Spec" button delivers a standardized routing configuration detailing token ratios, fallback thresholds, and prompt cache headers compatible with LiteLLM, Langfuse, or custom gateway proxies.