Workload Configuration
Monthly Queries
250,000
Avg Input Tokens
1,400
Avg Output Tokens
850
Prompt Cache Hit Rate
35%
Cache Read Discount
50%
Smart Router Astra Split
20% to Astra
Business Value / Task ($)
$2.50
Base Rate Matrix (per 1M tokens)
| Tier | Input | Output | Ratio |
|---|---|---|---|
| GPT-5.6 Sol | $4.00 | $20.00 | Baseline |
| GPT-6 Astra | $10.00 | $50.00 | 2.50x |
Monthly Spend & Unit-Economics Telemetry
Real-time Mathematical Model
100% GPT-5.6 Sol
$5,325
$21.30 / 1k requests
100% GPT-6 Astra
$13,312
$53.25 / 1k requests
Hybrid Router (20% Astra)
$6,922
$27.69 / 1k requests
100% Sol ($4/$20)
100% Astra ($10/$50)
Hybrid Routing Curve
Current Workload Operating Point
Monthly Budget Delta:
Deploying Astra across 100% of queries costs an extra +$7,987/mo (+150%).
Hybrid routing curtails the premium to +$1,597/mo (+30%).
Astra ROI & Accuracy Hurdle Rate
To justify Astra’s 2.5x cost jump, each request must deliver enough incremental quality or task-completion gain to offset its higher unit price.
Minimum Required Success/Accuracy Delta
+1.28%
At $2.50 economic value per completed task, GPT-6 Astra must achieve at least a 1.28 percentage-point absolute boost in successful resolutions over GPT-5.6 Sol to yield net positive ROI.
• Incremental cost per query: $0.0320
• Annualized Astra surplus (100% deployment): $95,850
• Annualized Hybrid surplus: $19,170
• Annualized Astra surplus (100% deployment): $95,850
• Annualized Hybrid surplus: $19,170
Per-Request & Monthly Ledger
| Component | GPT-5.6 Sol | GPT-6 Astra | Blended Hybrid |
|---|---|---|---|
| Effective Input / req | $0.0046 | $0.0116 | $0.0060 |
| Output / req | $0.0170 | $0.0425 | $0.0221 |
| Total Cost / 1k Calls | $21.62 | $54.05 | $28.11 |
| Cache Savings / mo | $368 | $919 | $478 |
| Total Monthly Spend | $5,405 | $13,512 | $7,026 |