# SocialToAI, free: Zhihu question answer API

> Get the first 20 answers to a Zhihu question by ID or link, in Zhihu's own order: text, author, upvotes, comment and save counts. One page only.

SocialToAI's Free plan for the Zhihu question answer API costs $0.00 per 1,000 answers. SocialToAI's docs list 3 of the 4 fields on our checklist: Text, Engagement, Author.
We haven't run a Zhihu question answer API benchmark yet.
This plan is free. We rank 28 plans for Zhihu question answer APIs by price. Half the plans cost $0.69 per 1,000 answers or less.
[Qovia's top-up](https://datacircle.dev/zhihu-question-answer-apis/qovia/top-up/llms.txt) costs the least per 1,000 answers: $0.05. Qovia charges for each page of results. We count 20 answers on each page to get the $0.05 price.

- This page: https://datacircle.dev/zhihu-question-answer-apis/socialtoai/free
- Get it: https://socialtoai.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- Request: `POST https://api.socialtoai.com/v1/call/zhihu.question_answers`
- API key: with the plan, on https://socialtoai.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- Its API docs: https://socialtoai.com/zhihu-question-answers-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- Sold by: SocialToAI (https://socialtoai.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 75%
- Text: ✓
- Engagement: ✓
- Author: ✓

## Price

- $ per 1,000 answers: $0.00
- Per: page of 20
- Billing: free

## Charges

- Repeat free: 5 minutes
- Also pays for: from the same budget: 215 other calls

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Get the first 20 answers to a Zhihu question by ID or link, in Zhihu's own order: text, author, upvotes, comment and save counts. One page only.

## Data

- Freshness: live
- Keep data: no limit
- Use data: Use the service lawfully and within the published rate limits. Do not try to identify the people behind anonymised comments, do not resell or share keys, and do not use the service to harass anyone. You are responsible for complying with the laws that apply to your use of the data.

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 50 pages, once
- Expires: never

## Rate limit

- Per second: 5
- Concurrent: 5

## Speed

- Answer: in the call

## The call

- You send: one of id or url
- Method: POST
- Path: /v1/call/zhihu.question_answers

## About the plan

- Plan: Free
- Who can get it: anyone who signs in with a Google account or an email code

## The 22 fields the plan's answer can hold

answer ID, answer URL, content type, title, text, created at, author ID, author username, author name, author followers, upvotes, comment count, save count, request ID, fetched at, result status, warnings, unavailable fields, approximate numbers, replayed, amount charged, credits remaining

## SocialToAI's plans (4)

- [SocialToAI, free](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/free/llms.txt): $0.00 per 1,000, 75% complete, live
- [SocialToAI, $10 pack](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/10-pack/llms.txt): $0.333 per 1,000, 75% complete, live
- [SocialToAI, $50 pack](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/50-pack/llms.txt): $0.25 per 1,000, 75% complete, live
- [SocialToAI, $200 pack](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/200-pack/llms.txt): $0.20 per 1,000, 75% complete, live

## SocialToAI's calls for this API (1)

- `POST /v1/call/zhihu.question_answers`: [SocialToAI, free](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/free/llms.txt)

## SocialToAI's APIs (44)

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- [SocialToAI: Zhihu question answer API pricing, 4 plans](https://datacircle.dev/zhihu-question-answer-apis/socialtoai/free/llms.txt)

## SocialToAI: Zhihu question answer API alternatives

- [Qovia, top-up](https://datacircle.dev/zhihu-question-answer-apis/qovia/top-up/llms.txt): $0.05 per 1,000, 100% complete, live
- [DataXAPI, $50 pack](https://datacircle.dev/zhihu-question-answer-apis/dataxapi/50-pack/llms.txt): $0.10 per 1,000, 75% complete, live
- [ProLevelMax, $10,000 pack](https://datacircle.dev/zhihu-question-answer-apis/prolevelmax/10000-pack/llms.txt): $0.522 per 1,000, 75% complete, live
- [SpiderHubs, $29 pack](https://datacircle.dev/zhihu-question-answer-apis/spiderhubs/29-pack/llms.txt): $3.222 per 1,000, 75% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://socialtoai.com/docs/credits-and-billing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- https://socialtoai.com/docs/data-and-usage?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- https://socialtoai.com/linkedin-user-profile-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- https://socialtoai.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- https://socialtoai.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing
- https://socialtoai.com/zhihu-question-answers-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=zhihu-question-answer-api-pricing