# LangSearch, free: Web search API

> Find relevant sources. Bring usable context into every answer.

LangSearch's web search API on its Free Plan. It costs $0.00 per 1,000 searches. It returns 2 of the 6 key fields we check: Date, Text.
LangSearch limits how many calls you get, but doesn't say how many.
Half of the 260 plans we rank by price cost $3.212 per 1,000 searches or less. This plan and 1 other tie for the lowest price of the 260 plans.
[Context.dev](https://datacircle.dev/web-search-apis/context-dev/300-monthly/llms.txt), [Serpex](https://datacircle.dev/web-search-apis/serpex/top-up-from-50/llms.txt) and [Search1API](https://datacircle.dev/web-search-apis/search1api/499-monthly-enterprise-post-search-search-full/llms.txt) are the best web search API providers in our benchmark.

- This page: https://datacircle.dev/web-search-apis/langsearch/free
- [Best web search API in 2026](https://datacircle.dev/best-web-search-api.txt)
- Get it: https://langsearch.com/pricing
- Request: `POST https://api.langsearch.com/v1/web-search`
- API key: with the plan, on https://langsearch.com/pricing
- Its API docs: https://docs.langsearch.com/api/web-search-api
- Sold by: LangSearch (https://langsearch.com)
- Checked: 2026-10-27

## In the answer

- Completeness: 33%
- Date: ✓
- Text: ✓

## Price

- $ per 1,000 searches: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Most per search: 50
- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Find relevant sources. Bring usable context into every answer.

## Data

- Keep data: no limit
- Use data: "LangSearch grants you a non-exclusive, non-transferable, and revocable license to access and use the Web Search API solely for the purposes specified in these Terms. Any other use is prohibited without prior written consent from LangSearch." [...] "Prohibited Use [...] Scraping, mining, or harvesting data from LangSearch Services. Interfering with or disrupting the functionality of LangSearch Services. Engaging in activities that could harm LangSearch’s reputation or business operations."

## Plan

- Pay: $0

## Rate limit

- Per second: 5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: query, Content-Type header "application/json". Optional: count, freshness, includeDomains, excludeDomains, contents.text, contents.text.maxCharacters
- Method: POST
- Path: /v1/web-search

## About the plan

- Plan: Free Plan
- Who can get it: anyone legally permitted to enter into a binding contract, at 18 or with a parent's or guardian's consent

## The 16 fields the plan's answer can hold

response code, log ID, message, response type, original query, web search URL, some results removed, result ID, page title, URL, display URL, snippet, published date, text, input tokens, output tokens

## LangSearch's plans (1)

- [LangSearch, free](https://datacircle.dev/web-search-apis/langsearch/free/llms.txt): $0.00 per 1,000, 33% complete

## LangSearch's calls (1)

- `POST /v1/web-search`: [LangSearch, free](https://datacircle.dev/web-search-apis/langsearch/free/llms.txt)

## LangSearch's APIs (1)

- [LangSearch: web search API pricing, 1 plan](https://datacircle.dev/web-search-apis/langsearch/free/llms.txt)

## LangSearch: web search API alternatives

- [Context.dev, free](https://datacircle.dev/web-search-apis/context-dev/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Serpex, free](https://datacircle.dev/web-search-apis/serpex/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Search1API, free, Free, POST /ask](https://datacircle.dev/web-search-apis/search1api/free-free-post-ask/llms.txt): $0.00 per 1,000, 33% complete, live
- [Spider Cloud, free, credits, POST /search, Search](https://datacircle.dev/web-search-apis/spider-cloud/free-credits-post-search-search/llms.txt): $0.00 per 1,000, 17% complete, live
- [Jina, free](https://datacircle.dev/web-search-apis/jina/free/llms.txt): $0.00 per 1,000, 50% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-27.

- https://docs.langsearch.com/api/web-search-api
- https://docs.langsearch.com/limits/api-limits
- https://docs.langsearch.com/reference/search-api-guide
- https://docs.langsearch.com/resources/faq
- https://langsearch.com
- https://langsearch.com/pricing
- https://langsearch.com/terms-of-service