What can you build with an AI text API?

You can add chat and text generation, summarization, embeddings for semantic search and RAG, and speech-to-text or text-to-speech to your own app — sending a request and getting back generated text, a vector, or a transcript over HTTP.

How is using an API different from a chatbot product?

A chatbot is a finished app you use directly; an API is a building block you integrate into your own product, with full control over prompts, data, and UX. APIs suit developers building features; chatbots suit end users.

How do I keep AI text API costs predictable at scale?

Pricing is usually per token, counting input and output, so long prompts add up fast. Estimate tokens per request, cap output length, cache repeated calls, and use smaller models where quality allows to control spend.

HuntifyAI

AI Text API · 19 tools

Best AI Text API Tools (2026)

Compare AI text API providers for LLM chat, text generation, embeddings, speech-to-text, pricing, and free tiers.

All AI Text API tools

OpenRouter - Unified interface for LLMs that routes prompts to 300+ models across 60+ providers with better prices and uptime.

DR 87

OpenRouter

openrouter.ai

OpenRouter provides a unified API interface to 300+ large language models from 60+ providers, finding the best price and uptime for each prompt, with 70T monthly tokens and over 5M users globally.

Kie.ai - Unified API for video, image, music, and chat AI models with developer-friendly pricing below Replicate and Fal.ai.

DR 71

Kie.ai

kie.ai

Kie.ai is a one-stop AI API platform that provides unified access to video, image, music, and chat models with 99.9% uptime, fast response times, and pricing below Replicate and Fal.ai for equivalent models.

Replicate - Cloud platform to run, fine-tune, and deploy open-source machine learning models with a simple one-line API.

DR 82

Replicate

replicate.com

Replicate is a cloud platform that lets developers run thousands of open-source machine learning models via a simple API, fine-tune them on custom data, and deploy custom models, all without managing GPU infrastructure.

ZenMux - 94+ AI models in one gateway — with automatic routing, multi-modal I/O, and result compensation

DR 50

ZenMux

zenmux.ai

ZenMux is an AI API gateway aggregating 94+ models from OpenAI, Anthropic, Google, DeepSeek, Grok, MiniMax, and more — with an auto-router, per-token pricing, multi-modal input/output, and a unique compensation policy for subpar results.

AIHubMix - One unified API for 500+ AI models — OpenAI, Claude, Gemini, DeepSeek and more, pay-as-you-go

DR 49

AIHubMix

aihubmix.com

AIHubMix is a pay-as-you-go API routing platform providing OpenAI-compatible access to 500+ AI models across text, image generation, embeddings, and TTS — with no subscription required and integrations for Cursor, LangChain, and more.

APIMart - Unified AI API marketplace offering GPT-5, Claude, Sora 2, and 100+ models through a single endpoint at discounted rates.

DR 43

APIMart

apimart.ai

APIMart is an AI API discount platform that consolidates access to 100+ top models—GPT-5, Claude 4.5, Sora 2, Flux.1 and more—through one endpoint and API key, with savings of 30-70% versus direct provider pricing.

EvoLink - Unified AI API for chat, image, and video models with smart routing, 99.9% uptime, and pricing up to 70% below direct providers.

DR 56

EvoLink

evolink.ai

EvoLink is a single-integration API platform that gives developers access to 40+ leading chat, image, and video AI models with smart routing and automatic failover, targeting pricing up to 70% lower than direct Fal.ai or provider usage.

BAI - Unified API gateway to 20+ top-tier LLMs with crypto-native payments and AI Agent economic identity

DR 45

BAI

b.ai

B.AI is foundational economic infrastructure for AI Agents — providing a unified API to GPT-5.x, Claude 4.x, Gemini, DeepSeek and more, with TRON-based crypto payments, Agent-to-Agent settlement, and a BAIclaw browser extension.

Easy Router - 40+ AI models in one gateway — OpenAI, Claude, Gemini, Midjourney, Suno, no subscription

DR 7

Easy Router

easyrouter.io

Easy Router is a unified AI API gateway providing OpenAI-compatible access to 40+ models including GPT, Claude, Gemini, DeepSeek, Midjourney, and Suno. Credits-based billing (no subscription), P99 <200ms, 99.9% SLA, and one-line URL swap to get started.

Grsai - Enterprise AI API aggregator with stable upstream access to mainstream image, video, and LLM models at reduced pricing.

DR 25

Grsai

grsai.ai

Grsai aggregates mainstream AI image, video, and LLM APIs—including GPT Image, Nano Banana, Sora 2, Gemini, Veo 3, and GPT-4o—into a single enterprise-grade gateway with pricing below direct provider rates.

DDS Hub - Claude & GPT API relay for Chinese developers — no bans, CN2 <50ms, pay with Alipay

DR 23

DDS Hub

ddshub.cc

DDS Hub is an API relay service for Claude and GPT models built for developers in China. It routes requests through enterprise-grade static IPs on CN2 dedicated lines (Hong Kong / Tokyo), keeping latency under 50 ms without exposing the user's own IP — eliminating account-ban risk. Credits are billed 1 RMB = 1 USD at Anthropic's official token prices, purchased via Alipay or WeChat Pay.

PoYo.ai - Developer AI API platform offering Sora 2, Nano Banana, GPT-4o, Claude 4.5, and 500+ models through one credit-based endpoint.

DR 29

PoYo.ai

poyo.ai

PoYo.ai is a premium AI API platform for developers with access to 500+ image, video, music, and chat models—including Sora 2, Nano Banana, GPT-4o, and Claude 4.5—through a single credit-based integration with no subscriptions.

What is an AI text API?

An AI text API lets developers add language features to apps over HTTP — text generation, chat, embeddings, and speech-to-text — without training models themselves. You send a request and get back generated text, a vector, or a transcript. Providers range from large LLM platforms to focused embedding or transcription APIs.

Core features to look for

LLM chat and text-generation endpoints
Text embeddings for search and RAG
Speech-to-text and text-to-speech
Streaming, function calling, and JSON output
Usage-based pricing and rate limits
SDKs, free tiers, and open-model options

Who uses AI text APIs, and how

LLM text generation

Add chat, summarization, or drafting to an app via a completion API.

Embeddings & search

Generate vectors for semantic search, RAG, and recommendations.

Speech APIs

Transcribe audio or synthesize voice with speech-to-text and TTS.

Free & pricing

Compare free tiers, per-token cost, rate limits, and open models.

How does an AI text API work?

AI text APIs host models on the provider's servers and expose them over HTTP. You send a prompt or audio with your API key, the model runs remotely, and the response returns as text, a vector, or a transcript — usually billed per token or per minute. SDKs and streaming make integration easier.