Last updated 08-14-2026
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DATAKU
DATAKU is a data science site that tracks AI benchmarks, API pricing, and model releases, then packages the numbers into free calculators and downloadable datasets. The homepage archives articles on inference costs, funding rounds, and head-to-head model comparisons, while the Tools section hosts eight utilities such as an LLM cost calculator, benchmark decoder, and model graveyard.
Most AI news sites summarize press releases. DATAKU cross-references provider docs, leaderboard scores, and its own pricing tables, which is why the downloadable datasets page lists 48-row pricing histories and 62-row benchmark score tables under CC BY 4.0 licenses.
Data analysts, ML engineers, and buyers use DATAKU when they need cost-per-token math, benchmark context, or CSV exports instead of marketing claims. The About page describes the project as benchmark and pricing tracking run by a former Tokyo data analyst.
LLM Cost Calculator estimates API spend across OpenAI, Anthropic, Google, Meta, and Mistral models
Benchmark Decoder explains what benchmarks measure and which models score highest
AI Training Data Tracker documents sources and cutoff dates for 18+ major models
Model Graveyard archives 25+ deprecated models with replacement notes
Downloadable datasets include 48-row pricing history and 62-row benchmark tables (CC BY 4.0)
AI Energy Calculator estimates watts, kWh, and CO2 per model query
Combines editorial analysis with eight purpose-built data calculators
Publishes CSV and JSON datasets with CC BY 4.0 licensing
Cross-references official docs and leaderboards instead of republishing hype
No paid API or team workspace; everything is read-only tooling on the site
Coverage depth depends on manual updates from a solo analyst
Some contact details are obfuscated on the About page
What is DATAKU?
DATAKU is a data-focused AI publication and toolset at dataku.ai that tracks benchmarks, pricing, and industry trends. It combines long-form analysis with free calculators for costs, energy use, and model comparisons.
Is DATAKU free to use?
DATAKU tools and datasets are free. The Tools page lists calculators and references at no charge, and downloadable datasets on the Data page are released under CC BY 4.0 with CSV and JSON exports.
What tools does DATAKU offer?
DATAKU hosts eight tools including an LLM Cost Calculator, Benchmark Decoder, Model Size Visualizer, AI Training Data Tracker, Model Graveyard, AI Energy Calculator, Hallucination Index, and AI Data Leak Timeline with 17+ documented incidents.
What datasets can you download from DATAKU?
DATAKU publishes tables such as AI Model Pricing History 2021-2026 (48 rows), AI Benchmark Scores 2023-2026 (62 rows), and a Model Release Timeline (45 rows). Each dataset includes CSV and JSON downloads with source notes.
What topics does DATAKU cover?
DATAKU articles fall into Benchmark Analysis, Pricing Watch, Model Comparisons, Data Engineering, and Industry Trends. Recent posts track inference provider rankings, funding data, and quarterly model release counts.
Who maintains DATAKU?
DATAKU is run by a former data analyst based in Tokyo who describes the site as tracking official model papers, provider documentation, and public leaderboards with cross-referenced sources on the About page.