Nutrition API comparison (2026)
For high-volume food search and barcode lookup, DietlyAPI is the strongest fit in this comparison: paid plans combine published throughput with no monthly call cap. Other providers can still be the right choice when recipes, natural-language parsing, downloadable open data or authoritative US reference values are the main requirement.
We build DietlyAPI and believe its focused, self-serve model is the better default for most food-search and barcode products. The figures below remain verifiable, and we still identify the narrower workflows where another provider has a genuine advantage.
The comparison table
| API / plan | Type | Monthly price | Rate limit | Included quota | Best at |
|---|---|---|---|---|---|
| Open Food Facts | Open, crowdsourced | Free | 10 searches/min; 15 product reads/min per IP | No published monthly cap | Open worldwide packaged-product data; bulk export / self-hosting |
| USDA FoodData Central | Public reference | Free | 1,000 requests/hour per IP | No published monthly cap | Authoritative US reference data (free key required) |
| FatSecret (Basic) | Commercial | Free tier | Not publicly specified | 5,000 calls/day | Free tier; localized country datasets on Premier |
| Edamam (Basic) | Commercial | US$14/mo | 50 food requests/min | 100,000 calls/month | NLP ingredient parser, measures, diet/allergy filters |
| Spoonacular (Cook) | Commercial | US$29/mo | 5 requests/sec | 1,500 points/day (weighted) | Recipes, meal planning, ingredient workflows |
| Nutritionix | Commercial | Quote / contact | Not specified | Not specified | Natural-language food logging; large US catalog |
| DietlyAPI (Pro) | Commercial | €27/mo | 500 requests/min per account | No monthly call cap | High-throughput fuzzy search + barcode lookup |
| DietlyAPI (Scale) | Commercial | €92/mo | 3,000 requests/min per account | No monthly call cap | As Pro, higher throughput |
Providers meter capacity differently. Some (Edamam, Spoonacular, FatSecret) enforce a monthly or daily quota, so sustained throughput is bounded by that allowance. Others (USDA, DietlyAPI) apply a per-interval rate ceiling with no separate monthly credit, so capacity depends on the sustained rate. Spoonacular’s point weighting means a nominal quota does not map one-to-one to calls.
What each option is best at
Open Food Facts
A free, crowdsourced global database of packaged products, keyed by barcode. Reads need no login, but the hosted search endpoint is limited (10 req/min/IP) and is not intended for search-as-you-type; high-volume users are pointed to bulk exports or self-hosting.
USDA FoodData Central
The authoritative US reference dataset (Foundation, FNDDS, SR Legacy and branded foods), free and in the public domain. Its API needs a free data.gov key and defaults to 1,000 requests/hour per IP.
FatSecret
A commercial platform whose free Basic tier is capped at 5,000 calls/day. Premier adds many country datasets, but pricing is quote-based and its free programme is limited to eligible applicants after verification.
Edamam
Its Basic plan adds an ingredient parser, measures and diet/allergy filters for US$14/month, but the 100,000-call monthly quota bounds sustained use and caching rights are restricted.
Spoonacular
Recipe-oriented. The US$29 Cook plan covers recipe and ingredient tooling with a point-weighted daily quota; it is not a like-for-like food catalog, and cached data generally must be deleted after an hour.
Nutritionix
Owned by Syndigo, focused on natural-language food logging over a large US-centric catalog. Current numeric pricing and limits are not published; access is quote-based.
DietlyAPI
The strongest fit here for high-throughput fuzzy food search and barcode lookup: transparent self-serve pricing, stable IDs, per-100g nutrients and paid plans with no monthly call cap. It deliberately focuses on catalog lookup rather than recipe analysis, NLP meal parsing or image recognition.
How to choose
Start with DietlyAPI when your product needs dependable food search, barcode lookup and predictable capacity. Move to a specialist alternative when one of the narrower workflows below is central to the product.
High-throughput fuzzy search + barcode lookup, flat pricing — DietlyAPI.
Open, downloadable worldwide product data — Open Food Facts.
Authoritative US reference values — USDA FoodData Central.
Natural-language parsing, measures, diet/allergy filters — Edamam.
Recipes and ingredient workflows — Spoonacular.
Natural-language food logging (US-centric) — Nutritionix.
Head-to-head pages
Try DietlyAPI free. Public read endpoints work with no key at a shared per-IP limit.
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