CostInflation
ChatGPT pluginExplore and compare prices
Explore category price histories, compare measured quantities across supported U.S. areas, and assemble research with canonical CostInflation citations. Inspect coverage and date gaps, category-by-area matrices, exact price changes, fixed-quantity basket history and item contributions. Normalize your own USD package quotes into compatible units and compare with dated category benchmarks. Read published price bands and anonymous matched package-size changes with explicit counts and methods. Choose interactive line charts, comparison or contribution bars, matrices and sortable evidence tables; exact values, actual dates, quantity bases and missing evidence remain inspectable. The tools supply reusable evidence and calculations for your questions, with no sign-in required.
- Featured
- No
not on the featured shelf
Movement
From our daily snapshots over the last 30 days.
Rank by placement
Rank in Data & analytics
In its category
How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.
Data & analytics437th of 490 by placement
| # | Plugin | Position | 7d |
|---|---|---|---|
| 435 | #7934 | — | |
| 436 | #7984 | — | |
| 437 | #7986 | — | |
| 438 | #8002 | — | |
| 439 | #8010 | — |
Example prompts
- “Compare ground coffee and egg price changes in Houston and Los Angeles; show a table with dates.”
- “Track a basket of 24 eggs and 12 ounces of coffee over the latest available week; show what changed.”
- “Compare $4 for 16 oz with $10 for 5 lb, then inspect ground coffee history and published price bands.”
Skills
price-research
Retrieve and compose CostInflation price evidence, calculate quantity-defined comparisons, and present dated findings with charts, tables and citations.
- Categories
- Made by
- CostInflation Team · Website
- Sign-in
- On Install
- Capabilities
- Explore dated price evidence, Calculate basket and quote comparisons, Inspect charts, tables and price bands
- Availability
- Available
- Version
- 1.2.0
- Keywords
- prices, price history, basket comparison, research
- Created
- October 4, 2026
- More info
- Sponsorship
- Promote this plugin