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AI API Tools

The ai api tools we detect on new sites, ranked by how many use each. Part of AI & Emerging.

Tools tracked
204
in AI & Emerging
Sites
15,940
using at least one ai api tool
Leader
26%
Anthropic, of these sites
Above 1%
14
tools on more than 1% of them

What we found

  1. Anthropic leads, on 26% of the sites using an ai api tool, with Abacus.AI close behind on 22%.
  2. Only 14 of the 204 ai api tools we track run on more than 1% of these sites.
  3. Among sites launched in September, Hugging Face rose to #6 from #8 in August.

The leading ai api tools

# Movement Tool Country Share Bar Sites 90 days
1 ▼1 Anthropic Anthropic Claude API: API access to Claude models, used by sites that integrate Claude for chat, content generation, and AI features. 26% 4,099
2 – Abacus.AI Enterprise AI platform offering hosted LLMs, autonomous agents, and an AI super-assistant for professionals. 22% 3,437
3 ▲1 OpenAI API Programmatic access to GPT, embeddings, image generation, and other OpenAI models. 20% 3,209
4 – Google Gemini API Google Generative Language API (Gemini). 10% 1,618
5 – One API Open-source LLM API proxy and aggregation platform (songquanpeng/one-api) 5.7% 902
6 ▼2 OpenRouter Unified API proxy that routes LLM calls across OpenAI, Anthropic, Google, and other model providers. 4.3% 689
7 – ElevenLabs AI voice synthesis and audio generation platform 4.2% 664
8 ▲2 Hugging Face Hugging Face inference API / model hub. 4.0% 641
9 – Groq Hardware-accelerated LLM inference API offering very high tokens-per-second on open models. 3.3% 526
10 ▼1 DeepSeek Large language model API provider. 1.9% 299
11 ▲1 fal.ai API for fast inference of generative AI models, focused on image and video diffusion workloads. 1.8% 290
12 – Vapi Vapi voice AI platform for building voice assistants 1.4% 229
13 ▲1 Deepgram AI speech recognition and transcription API 1.2% 185
14 ▼3 Replicate Cloud platform for running and fine-tuning open-source AI models. 1.1% 171
15 ▼5 xAI Grok large language models, used via the xAI API and the Grok product. 1.0% 154

Share is of the 15,940 sites using an ai api tool; a site can use more than one. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days. Showing the top 15 of 204.

Watches, exports and the API give you every ai api tool and the sites using each, from £15 a month.

Recently launched products using ai api tools

Product Launched
Hashtag Web3 20 Oct 2026
Claude 19 Oct 2026
Openjobs 19 Oct 2026
Free Claude Course: Cowork, Code & Agent 19 Oct 2026
NoteGen 19 Oct 2026
Kai Resolve by Gleap 19 Oct 2026

Often built with

Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).