
OpenRouter
boldrouter
liteLLM
APIVAI
CometAPI
Eden AI
APIPark
Cheap unified AI API: reach Claude, GPT, Gemini and 100+ models via one OpenAI-compatible endpoint. Pay-as-you-go from $0, free tier, official SDKs in 8 languages.
Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah
Which is more popular?
Based on our record, Api.Airforce seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | api.airforce | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Api.Airforce yet.
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

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Why this product is good
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Overall verdict
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Share your experience with using Api.Airforce and ZIP Code API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Third-party gateways change the economics. As of Aug 2026, Api.Airforce offers Claude Opus 5 at $3.58 per million input tokens and $17.88 per million output tokens through an OpenAI-compatible API, undercutting official pricing by... - Source: dev.to / 3 months ago
Tracking ZIP Code API since May 2026.
When comparing Api.Airforce and ZIP Code API, you can also consider the following products.

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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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A unified, OpenAI-compatible gateway to every major LLM provider. One endpoint, one key, one bill - with automatic routing and failover.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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