freeapis

Jina AI

Free AI API for embeddings, reranking, and text processing

Authentication
API Key
HTTPS
Yes
CORS
Yes
Documentation / URL
https://jina.ai

Overview

Jina AI provides embeddings/reranking — key-based (an invalid key returns 401, verified).

Quick Start

Embeddings (replace YOUR_KEY):

curl "https://api.jina.ai/v1/embeddings" \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"jina-embeddings-v3","input":["hello"]}'

Authentication

  • Register at jina.ai → free API key.
  • Send it as Authorization: Bearer (invalid → 401, verified).

Rate Limits & Notes

  • Free tier with limits (check the docs); paid plans scale.
  • Embeddings, reranking, reader.

FAQ

Is Jina AI free? Free tier with limits; more is paid.

Why 401? Invalid keys return 401 (verified) — register for a key.

What’s the auth style? Authorization: Bearer.

More in Machine Learning

APIAuthHTTPSCORS
AI Economics Tools

Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek

No authYesYes
AI For Thai

Free Various Thai AI API

API KeyYesYes
BRAINIALL

PT-BR and Spanish audio transcription with diarization and SRT/VTT

API KeyYesYes
Clarifai

Computer Vision

OAuthYesUnknown
Cloudmersive

Image captioning, face recognition, NSFW classification

API KeyYesYes