Best AI Tools with an API in 2026

An API turns a tool you use into a component you build with, and the presence of one is the sharpest dividing line in this directory. Some of the best products here, Midjourney and Grammarly among them, deliberately publish none.

The ones that do fall into two groups. Model APIs from the assistant vendors bill per token and give you the raw capability with no interface attached.

Product APIs from generation and translation tools expose the specific job the product does, usually per character, credit or call. What to compare is rarely the endpoint list.

It is the rate limits, whether official SDKs exist for your language, how API traffic is treated in the privacy terms, and whether there is a free allowance big enough to build against. Each listing states its documentation URL and its SDK languages.

Quick answer

Claude and Gemini both publish documented model APIs with official SDKs. For generation, Leonardo, Ideogram and Adobe Firefly all expose their image models; Midjourney does not.

23tools listed
23of 23scored by an editor
21of 23with a free plan
$18/momedian entry price
Aug 26last pricing check

Top picks

Top 3 AI tools with an API right now

1 Editor's pick
Canva
Design8.8
Design, presentations and video with AI generation built into the editor
Price
$18/mo
Free plan
Yes
API
Yes
Pricing checked Aug 26
2 Avatars specialist
HeyGen
Avatars8.8
AI avatar video and lip-sync translation, from $29 a month
Price
$29/mo
Free plan
Yes
API
Yes
Pricing checked Aug 26
3 Automation specialist
n8n
Automation8.7
Self-hostable workflow automation where every agent step is visible
Price
$24/mo
Free plan
Yes
API
Yes
Pricing checked Aug 26

Compare the best AI tools with an API

Ranked by editor score, then by listing completeness. Entry price is the cheapest paid plan.

Comparison of AI tools with an API by price, free plan, platforms and score
Tool	Best for	From	Free plan	Platforms	Score
1Canva	Small teams that need on-brand visuals without a designer in the loop	$18/mo	Yes	Web app, Windows, macOS +2	8.8
2HeyGen	Creators and marketers publishing short avatar video and localised ads	$29/mo	Yes	Web app, iOS	8.8
3n8n	Technical teams that want automations on their own infrastructure	$24/mo	Yes	Web app, Linux, CLI	8.7
4ChatGPT	Anyone who wants one assistant for writing, research, analysis and light coding	$20/mo	Yes	Web app, Windows, macOS +2	8.7
5DeepL	Teams translating documents who need consistent terminology and EU-grade privacy	$10.49/mo	Yes	Web app, Windows, macOS +3	8.6
6Gemini	Anyone already working in Gmail, Docs and Drive who wants one assistant across them	$4.99/mo	Yes	Web app, iOS, Android +1	8.6
7Perplexity	Researchers, students and analysts who need verifiable answers quickly	$20/mo	Yes	Web app, iOS, Android +3	8.6
8Zapier	Teams putting AI into workflows across tools that have no native integration	$19.99/mo	Yes	Web app, Chrome extension, CLI	8.5
9Adobe Firefly	Agencies and brands that need generated images cleared for commercial use	$9.99/mo	Yes	Web app, iOS, Android	8.5
10Fireflies.ai	Sales and client-facing teams in back-to-back calls all day	$18/mo	Yes	Web app, iOS, Android +3	8.5

All AI tools with an API, compared

Every listing in this hub, 24 per page.

ChatGPT

Chatbots & agents8.7

OpenAI's general-purpose assistant for writing, analysis, images and code

Price: $20/mo
Free plan: Yes
API: Yes

DeepL

Translation8.6

Machine translation for 30+ languages, with glossaries and document files

Price: $10.49/mo
Free plan: Yes
API: Yes

Gemini

Chatbots & agents8.6

Google's assistant across the Gemini app, Gmail, Docs and Android

Price: $4.99/mo
Free plan: Yes
API: Yes

Perplexity

Research8.6

Answer engine that searches the web and cites every source

Price: $20/mo
Free plan: Yes
API: Yes

Zapier

Automation8.5

Connects 9,000+ apps and runs AI steps inside the automation

Price: $19.99/mo
Free plan: Yes
API: Yes

Adobe Firefly

Image generation8.5

Commercially safe image, video and audio generation from Adobe

Price: $9.99/mo
Free plan: Yes
API: Yes

Fireflies.ai

Meeting notes8.5

Meeting notetaker with unlimited transcription and CRM sync

Price: $18/mo
Free plan: Yes
API: Yes

Make

Automation8.5

Visual automation builder with AI agents across 3,000+ apps

Price: $9/mo
Free plan: Yes
API: Yes

ElevenLabs

Audio & voice8.5

Lifelike text-to-speech, voice cloning and dubbing in 30+ languages

Price: $5/mo
Free plan: Yes
API: Yes

Gamma

Presentations8.5

Generate presentations, documents and one-page websites from a prompt

Price: $10/mo
Free plan: Yes
API: Yes

Synthesia

Avatars8.4

Turns a script into a video with an AI presenter, in 140+ languages

Price: $29/mo
Free plan: Yes
API: Yes

Claude

Chatbots & agents8.3

Anthropic's assistant for writing, analysis and agentic coding

Price: $20/mo
Free plan: Yes
API: Yes

Otter.ai

Meeting notes8.3

Meeting notetaker that joins the call and writes the recap

Price: $16.99/mo
Free plan: Yes
API: Yes

Leonardo.Ai

Image generation8.3

Image, video and motion generation with fine-tuned models and an API

Price: $12/mo
Free plan: Yes
API: Yes

Jasper

Copywriting8.1

AI marketing platform with brand voice, campaigns and content workflows

Price: $49/mo
Free plan: No
API: Yes

Ideogram

Image generation7.9

Image generation that renders readable text inside the picture

Price: $20/mo
Free plan: Yes
API: Yes

Suno

Audio & voice7.9

Generates full songs with vocals from a text prompt

Price: $10/mo
Free plan: Yes
API: Yes

Runway

Video7.9

Text-to-video, image-to-video and AI editing tools for filmmakers

Price: $15/mo
Free plan: Yes
API: Yes

Notion AI

Productivity7.7

AI writing, meeting notes and search built into your Notion workspace

Price: $24/mo
Free plan: Yes
API: Yes

Microsoft 365 Copilot

Productivity7.3

AI inside Word, Excel, PowerPoint, Outlook and Teams

Price: $18/mo
Free plan: No
API: Yes

Buying guide

How to choose an AI tool with an API

4 checks, in the order that saves the most time.

Check the SDKs before the endpoints
An official library in your language saves days of retry, streaming and error handling. A REST spec alone means you write that layer yourself.
Read how API traffic is treated
Most vendors exclude API traffic from training even when their consumer product does not. Get that in the terms, since it is often the reason to use the API rather than the app.
Find the free development allowance
Several vendors give enough monthly volume to build and test against. Using it keeps development work off the production bill.
Price one finished output, not one call
Tokens, characters and credits are not comparable units, and retries are part of the real cost. Measure the price of a completed result at production quality.

Questions

AI tools with an API FAQ

Short, factual answers on pricing, free plans and how AI tools with an API are ranked here.

Ask another question

Which AI tools have a public API?

Claude, Gemini and ChatGPT publish model APIs. Leonardo, Ideogram and Adobe Firefly expose image generation, DeepL exposes translation, and ElevenLabs exposes voice. Midjourney and Grammarly publish none.

Does Midjourney have an API?

No. There is no public API, which rules it out for automated pipelines. Leonardo, Ideogram and Adobe Firefly are the closest alternatives that publish one.

Is API usage billed separately from a subscription?

Almost always. A consumer or team subscription rarely includes API credits, and API traffic is metered per token, character or call on its own bill.

Do vendors train on data sent through the API?

Most exclude API traffic from training even where their consumer apps do not, and state it in the terms. Confirm per vendor before sending anything confidential.

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