Cost & PricingFree AI API Tiers: How to Compare Limits That Keep Moving
Free tier numbers rot within weeks, and several vendors have stopped publishing them entirely. Here is a method for comparing them that survives the churn.
ReadNotes on models, agents, and what inference costs
Practical writing for developers building with large language models — how they work, how to pick one, and how to keep the bill predictable.
What inference costs, and why the billing model matters.
Cost & Pricing
Cost & PricingInput vs Output Token Pricing: Which One Actually Bills You
Output tokens cost several times more per token, yet input usually dominates the bill. Here is how to compute your own blended rate and act on it.
ReadCost & PricingIs Unlimited AI Actually Unlimited?
No inference provider can sell genuinely uncapped compute. Here is what the word hides, why the limits exist, and exactly what to demand in writing before you buy.
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Cost & PricingMeasuring AI ROI for Developers Without Fooling Yourself
Token counts are not returns. Here is how to convert engineer hours into money, pick a metric that survives scrutiny, and avoid the usual measurement traps.
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Cost & PricingPer-Token vs Flat-Rate AI Pricing: Run the Numbers Yourself
Metered inference makes sense until you start using agents. Here is the arithmetic that decides which billing model is cheaper for how you actually work.
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Cost & PricingPrompt Caching Economics: Break-Even, TTL and Hit Rate
Cache writes cost more than normal input, so caching only pays above a read threshold. Here is the arithmetic for TTL choice, hit rate and breakpoint placement.
ReadCost & PricingSelf-Hosting vs a Managed API: Find Your Break-Even
Running open weights on rented GPUs has a break-even volume. Here is how to compute yours from throughput and utilisation, and why most teams never reach it.
ReadCost & PricingSetting an AI Budget for a Small Engineering Team
A bottom-up method for budgeting model spend on a team of five to twenty, including the buffer to hold, the caps to set, and the alerts that matter.
ReadCost & PricingThe Hidden Costs of AI Coding Tools
The model invoice is the smallest line item. Here is the full list of what agentic coding actually costs, and a method for pricing each part yourself.
ReadCost & PricingToken Accounting: Explaining AI Costs to Finance
Finance teams need cost drivers, allocation and controls, not a lecture on transformers. Here is how to translate token usage into terms a budget owner can act on.
ReadCost & PricingWhat AI Actually Costs Per Developer Per Month
There is no single number, but there is a reliable way to derive yours. Work through the token arithmetic behind light, typical and heavy agentic usage.
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Cost & PricingWhat It Costs to Run a Fleet of Agents
Fan-out is the dominant cost term once you run agents in parallel. Here is the arithmetic for coordinator and subagent spend, plus what actually reduces it.
ReadShowing 49–60 of 62 articles