Start with a unit of work you can recognise: a research brief, a code change or an analysis. A work unit represents a completed workflow with a stated quality standard. Its consumption depends on the model, setting and tools used.Use the same definition of a work unit for demand and capacity. Benchmark task cost is a proxy for consumption. It does not directly measure the allowance a subscription grants, or the consumption of every complete workflow.MindStudio: forecasting token usage. Workflow measurement, agent overhead and peak-demand planning. Published 25 May 2026.
Test the purchase and the route together. For each eligible plan combination, assign the work to exact models and effort settings. Estimate the usable capacity those assignments provide, then subtract the work you need. That gives you headroom or a deficit. Check the reserve, required quality and monthly budget separately. The default ranking favours combinations that cover the workload and reserve. It then compares quality, using price when quality is close.
The result is a purchase and a routing allocation, with a monthly bill and estimated headroom. Provider trust and continuity of access also affect which purchases I would accept.The demonstration uses synthetic plans, models and limits. It tests capacity, quality and budget. It does not enforce redundancy: Plans A and B represent different providers, but together cost US$220 against the example’s US$200 budget. Requiring a second provider changes which purchases are eligible. Scores are synthetic. The ranking compares quality after capacity and budget checks. Measuring accepted work and review effort would be needed to compare realised value. The demonstration includes plan fees alone.
The example uses a quality-first rule within budget. Both Plan A with Model E Medium at US$80 and Plan B with Model Q High at US$140 meet its quality floor and reserve. The US$140 option buys a higher synthetic score: 88.1 instead of 82.4. That is another US$60 a month for 5.7 quality points. Choose the US$80 option if your objective is minimum cost at acceptable quality. Pay the premium when better accepted output or less review and rework justify the extra US$60.
Does the plan cover the work?
Why pay for the higher quality route?
Select a quantity to inspect its inputs. Double-click opens full detail.
Assumptions and source
All example plans, models, prices, scores and limits are synthetic. One work unit represents one completed workflow. The reserve is 1.5 times average demand. Task importance weights quality independently of workload volume.
Cover work and reserve first, then prefer higher task-weighted quality within budget. Within 0.5 quality points, prefer the lower fee. If no allocation covers reserve, compare coverage first. This is a quality-first allocation rule.
Source: dated Token Department chart inputs and retained selection calculations, 12 October 2026.
Usable capacity − Required work = Headroom or deficit. Reserve, task quality and monthly budget are separate checks. Click a quantity or check to reveal its inputs; double-click opens the full branch. The example tests four supplied allocations using synthetic plans, models, prices, scores and limits. Capacity remains conditional on the chosen model, effort and usage windows. The 1.5× reserve is provisional.
Work I need
Forecast the workload independently of the plans you might buy.
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Activity: Days × Sessions/day × Agent factor. Count workflow runs and apply the agent multiplier once according to session scope.
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Task mix: Task volumes and their shares. Split sessions by the amount of work in each task category.
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Work-unit size: Task sessions × Tasks/session. Declare the size of a session and the unit of work used to compare capacity with demand.
Quality I require
Quality priorities determine which configurations qualify and how their scores contribute to the comparison.
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Task importance: Importance weights quality independently of volume. A rare important task can have a high quality weight while retaining a low session count.
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Model quality and effort: Exact configuration scores and retained floors. Compare the exact model, effort, capabilities and task-quality evidence.
Budget and access
Cash budget and access constrain the candidate plan combinations.
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Monthly budget: Plan fees + Required extras ≤ Budget. Reserve any required tool and dictation spend before comparing subscription fees.
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Plan eligibility: Models, interfaces, capabilities and provider rules. Keep combinations that meet the access requirements and selected plan-count limit.
Compare plans and model allocations
Test candidate plan combinations and task assignments together. Routing determines both quality and usable capacity.
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Candidate plan combinations: Generate affordable eligible purchases. Try eligible combinations, with one plan per provider and up to the selected plan-count limit.
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Task-to-model allocation: Task volume × Model share × Matched usage. Assign work to eligible exact model and effort pairs within each plan combination.
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Capacity and reserve checks: Shared pools, model caps and usage windows. Test every governing constraint and apply the reserve once.
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Compare the candidates: Safety coverage, task-weighted quality and price. Under the default ranking, prefer covering combinations, then higher quality. Price decides when quality is close.
Recommended mix
The recommendation contains a purchase and a routing allocation, together with estimated quality and capacity.
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Plans and model assignments: Recommended purchase and routes by task. Show which plans serve the workload and the exact model and effort assigned to each task.
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Monthly bill: Selected plan fees + Required extras. Report cash spending against the available monthly budget.
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Headroom or deficit: Selected usable capacity − Work needed. Calculate spare work units for the chosen mix and check the reserve separately.
Illustrative inputs
The example assumes five active days, four sessions per day, one agent and one task per session: 20 completed workflows per week. The monthly budget is US$200 with no required extras. The reserve target is 1.5× average demand, or 30 work units. All plans, models, prices, quality scores, usage rates and limits are synthetic.
| Task | Volume share | Importance |
|---|---|---|
| Research | 40% | 7 |
| Coding | 30% | 6 |
| Analytics | 20% | 4 |
| Slides | 10% | 3 |
| Task | Model Q · High units/workflow | Model E · Medium units/workflow |
|---|---|---|
| Research | 6 | 3 |
| Coding | 4 | 2 |
| Analytics | 3 | 1.5 |
| Slides | 2 | 1 |
| Task | Model Q · High score | Model E · Medium score |
|---|---|---|
| Research | 90 | 86 |
| Coding | 88 | 82 |
| Analytics | 87 | 80 |
| Slides | 85 | 78 |
The synthetic minimum quality score is 75. Importance weights quality independently of volume. Weighted quality = Sum of (Importance × Task score) ÷ Sum of importance.
| Plan | Monthly fee | Weekly pool | Research cap | Peak cap |
|---|---|---|---|---|
| A | US$80 | 96 | 80 | 10 |
| B | US$140 | 144 | 80 | 16 |
Pool and research caps use matched allowance units per week. Peak caps use units per minute. Model Q · High has an assumed peak use of 8 units/minute; Model E · Medium has 4. A and B represent separate providers. Their shared pools are checked independently.
Illustrative candidate comparison
| Candidate allocation | Monthly bill | Usable work/week | Quality score | Result |
|---|---|---|---|---|
| Plan A · Model Q High | US$80 | 21.8 | 88.1 | Covers average work; reserve falls short |
| Plan A · Model E Medium | US$80 | 43.6 | 82.4 | Covers work and reserve |
| Plan B · Model Q High | US$140 | 32.7 | 88.1 | Recommended under the default ranking |
| Plans A + B · Model Q High | US$220 | Excluded | 88.1 | Over budget |
Model Q uses 88 allowance units/week; Model E uses 44 at the same task volume. The two assignments change both quality and usable capacity within Plan A. Plan B’s higher-effort allocation covers the reserve and has the higher quality score. The default ranking recommends it at US$140/month.
For each candidate, divide full-forecast usage by each matched limit. Cover = 1 ÷ Largest fraction used. Usable work C = Work needed D × Cover. Headroom or deficit = C − D. Test C ≥ D × Reserve and Plan fees + Required extras ≤ Budget separately.
The recommended allocation has 32.7 work units of capacity against 20 needed, giving 12.7 spare. Its 30-unit reserve target fits. Capacity stays conditional on the declared work mix, timing and matched limits.
The current selector uses exact Arena category median task costs as allowance proxies and inferred allowances. Measured mean usage of complete workflows can refine expected demand; stress cases and peak windows remain separate checks. The example supplies four allocations to illustrate the selection rule. The full selector searches its eligible catalogue.
Default ranking favours covering combinations, then task-weighted quality. Within 0.5 quality points it prefers lower monthly cost. If no combination covers the reserve, coverage differences above 0.5 percentage points take priority. Headroom is reported as an output.
