---
title: "Anthropic vs OpenAI: Which is searched more?"
description: "Which is more popular in search, Anthropic or OpenAI? Compare estimated monthly branded-search demand and Share of Search inside the AI model companies set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time."
canonical: "https://gobrandwave.com/demand/global-en/categories/ai-model-companies/compare/anthropic-vs-openai"
publisher: "Brandwave"
---

# Anthropic vs OpenAI: Which is searched more?

Which is more popular in search, Anthropic or OpenAI? Compare estimated monthly branded-search demand and Share of Search inside the AI model companies set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.

## Key facts

- **Compared**: Anthropic and OpenAI
- **Competitive set**: AI model companies
- **Market**: Global
- **Month measured**: Sep 2026
- **Anthropic Share of Search**: 39.3%
- **OpenAI Share of Search**: 48.1%

## Which is more popular in search, Anthropic or OpenAI?

- In September 2026, OpenAI had more branded searches than Anthropic among AI model companies worldwide. OpenAI was estimated to have 6.1M branded searches compared to Anthropic’s 5M, and held a 48.1% Share of Search versus Anthropic’s 39.3%.
- OpenAI was ahead of Anthropic in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Anthropic’s estimated Share of Search among AI model companies worldwide moved from 7% to 39.3%, and its estimated monthly branded searches moved from 823K to 5M.
- Across the 12 months ending September 2026, OpenAI’s estimated Share of Search among AI model companies worldwide moved from 78.1% to 48.1%, and its estimated monthly branded searches moved from 9.1M to 6.1M.

## How did search popularity change for AI model companies worldwide in September 2026?

- In September 2026, Anthropic gained estimated Share of Search among AI model companies worldwide, from 30% to 39.3%.
- In September 2026, OpenAI lost estimated Share of Search among AI model companies worldwide, from 54.8% to 48.1%.

## Month by month

| Month | Anthropic estimated searches | Anthropic Share of Search | Anthropic rank | OpenAI estimated searches | OpenAI Share of Search | OpenAI rank |
| --- | --- | --- | --- | --- | --- | --- |
| Oct 2025 | 823K | 7% | 3 | 9.1M | 78.1% | 1 |
| Nov 2025 | 1M | 8.4% | 3 | 9.1M | 76.7% | 1 |
| Dec 2025 | 823K | 6% | 3 | 11.1M | 81.5% | 1 |
| Jan 2026 | 1.2M | 13.3% | 3 | 6.1M | 66.5% | 1 |
| Feb 2026 | 6.1M | 43% | 1 | 6.1M | 43% | 2 |
| Mar 2026 | 5M | 24.2% | 2 | 13.6M | 65.7% | 1 |
| Apr 2026 | 4.1M | 30.9% | 2 | 7.5M | 56.5% | 1 |
| May 2026 | 3.4M | 26.4% | 2 | 7.5M | 58.9% | 1 |
| Jun 2026 | 5M | 42% | 1 | 5M | 42% | 2 |
| Jul 2026 | 2.7M | 30.2% | 2 | 5M | 55.1% | 1 |
| Aug 2026 | 2.7M | 30% | 2 | 5M | 54.8% | 1 |
| Sep 2026 | 5M | 39.3% | 2 | 6.1M | 48.1% | 1 |

## How each brand is measured

Brandwave collects information about searches that people make online using Anthropic’s and OpenAI’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

- **Anthropic**: Measured on the search term “anthropic”.
- **OpenAI**: Measured on the search term “openai”.

- [Anthropic profile](/demand/global-en/brands/anthropic)
- [OpenAI profile](/demand/global-en/brands/openai)
- [All AI model companies worldwide](/demand/global-en/categories/ai-model-companies): The set both shares are measured inside, 5 brands.

## Methodology

- [How is branded search demand measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused.

## Frequently asked questions

### Which is more popular in search, Anthropic or OpenAI?

In September 2026, OpenAI had more branded searches than Anthropic among AI model companies worldwide. OpenAI was estimated to have 6.1M branded searches compared to Anthropic’s 5M, and held a 48.1% Share of Search versus Anthropic’s 39.3%.

## Cite this page

Brandwave. "Anthropic vs OpenAI: Which is searched more?". https://gobrandwave.com/demand/global-en/categories/ai-model-companies/compare/anthropic-vs-openai

This page is also available as HTML at https://gobrandwave.com/demand/global-en/categories/ai-model-companies/compare/anthropic-vs-openai. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.