Each section answers first and explains second. Calculations are traceable examples, not outcome promises.
A generation price is not the final cost
A price per second, image or character only describes a technical unit. Users publish finished pieces that may require several attempts, voice, music, editing, thumbnails and review. Looking only at generation price understates spend and makes tool comparisons misleading.
The useful unit is cost per publishable piece. Add every billed step, separate fixed and variable costs, and divide total spend by accepted pieces rather than attempted generations.
Model creative rejection without charging free failures
Creative rejection is part of production: a technically successful generation can still fail on style, continuity or clarity. The model should expose an acceptance rate. A technical failure should raise cost only when the provider confirms that it is billed.
This avoids both false optimism and inflated estimates. The first assumes every attempt works; the second charges attempts that a provider may automatically refund.
Convert currencies and plans with a reference date
Prices change, promotions expire and exchange rates move. Every price should preserve its original currency, check date and source. Currency conversion belongs in a separate layer so an exchange-rate update does not rewrite the underlying price.
When a rate is account-specific, RenderMeter should ask the user for it and label it as private input. A personal promotion must never become a universal public rate.
Compare tools against the real bottleneck
The cheapest technical unit is not always the cheapest usable result. A tool with higher acceptance, faster editing or better control may reduce total cost even with a higher starting price.
Compare publishable cost, human time, format compatibility and monthly capacity. That combination selects tools by their effect on the production system rather than one isolated price.
TOOLS MENTIONED
What each tool does and how it is priced
Runway
High-quality AI video generation and editing.
- Verified price
- API: 5–12 credits per second for Gen-4 Turbo and Gen-4.5; 1 credit = US$0.01.
- Strength
- Mature workflow and transparent API unit pricing.
- Weakness
- Discarded generations can consume budget quickly.
ElevenLabs
Voice, dubbing, transcription, music and sound effects.
- Verified price
- Creative: Free 10,000 credits; Starter US$6; Creator US$22; Pro US$99/month.
- Strength
- Natural voices and a broad audio-production ecosystem.
- Weakness
- Usage varies by product and model; credits do not map to one universal minute rate.
Midjourney
Concept art, thumbnails, styles and visual development.
- Verified price
- Basic US$10, Standard US$30, Pro US$60 and Mega US$120/month.
- Strength
- Strong art direction and consistent aesthetic quality.
- Weakness
- Private creation is limited to Pro and Mega.
Prices are subject to change. Last reviewed 24 July 2026. Check tax, region, promotions and your account rate before purchasing.
Universal formula
publishable cost = unit × volume × attempts + post-production- Unit
- €0.05/sec
- Volume
- 20 sec
- Attempts
- 1.5
- Post-production
- €2
Step-by-step method
- 01
Identify the unit
Second, credit, character, minute or generation.
- 02
Convert to useful volume
Relate the unit to final duration or quantity.
- 03
Add waste
Include creative attempts and billed failures.
- 04
Convert the plan
Separate marginal, monthly and annual commitment cost.
FAQ
Questions people actually ask
How do I convert credits to money?
Divide plan price by included credits only when credits are comparable and expiry rules match.
What is cost per publishable output?
It is the cost of every attempt and stage required to finish an output you can actually use.
Should I include my time?
Yes, in a full economic view. Keep labor separate from tool spend so both decisions remain legible.
PART OF
- I want to spend less on AI toolsWhere budget leaks: unused credits, discarded attempts and wrongly sized plans.
The planner turns this method into capacity, cost, scenarios and an operating week using your constraints.
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