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Which LLM API provider do AI assistants recommend?

What ChatGPT, Perplexity, Claude, Grok, DeepSeek, Cohere recommend when asked for the best LLM API provider: 5 brands named, led by Anthropic, OpenAI, Groq.

Assistants answering6
Brands named5
Named by every assistant2
Questions asked1

When asked for the best LLM API provider, 6 AI assistants named 5 brands between them this month. Anthropic was named most often, followed by OpenAI and Groq. 2 brands were named by every assistant that answered: Anthropic, OpenAI.

Who named whom

BrandChatGPTPerplexityClaudeGrokDeepSeekCohereNamed by
Anthropic✓✓✓✓✓✓6 of 6
OpenAI✓✓✓✓✓✓6 of 6
Groq··✓✓✓·3 of 6
Mistral·✓✓·✓·3 of 6
OpenRouter·✓✓·✓·3 of 6

Share of voice

Anthropic28.6%
OpenAI28.6%
Groq14.3%
Mistral14.3%
OpenRouter14.3%

What each assistant said

ChatGPT

Named 2 brands, in this order: OpenAI, Anthropic.

Choosing the best LLM (Large Language Model) API provider for a small business depends on several factors, including cost, features, ease of use, and specific business needs.

Perplexity

Named 4 brands, in this order: OpenAI, Anthropic, OpenRouter, Mistral.

For a small business, the best LLM API provider depends on your main priority: lowest friction, lowest cost, or open-model flexibility.

Claude

Named 5 brands, in this order: OpenAI, Anthropic, Groq, Mistral, OpenRouter.

Here's a practical breakdown to help you decide:

Grok

Named 3 brands, in this order: OpenAI, Groq, Anthropic.

The "best" LLM API provider for a small business depends on your specific needs (budget, use case, latency requirements, and data sensitivity), but here's a practical breakdown based on real-world usage by small teams.

DeepSeek

Named 5 brands, in this order: OpenAI, Anthropic, Mistral, Groq, OpenRouter.

There's no single "best" — it depends on your priorities.

Cohere

Named 2 brands, in this order: OpenAI, Anthropic.

Choosing the best Large Language Model (LLM) API provider for a small business depends on several factors, including cost, ease of integration, scalability, and specific use cases.

The questions asked

Asked between 2026-09-26 and 2026-09-26. Not answering this month: Gemini, Mistral.

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How this was measured

Each month we ask every assistant the same plain buyer questions, worded the way a person shopping for this kind of product would ask them, with no brand suggested in the question except where the question itself names the market leader to find alternatives to. Each assistant answers in a fresh session with no earlier conversation, so an answer reflects what the assistant says to anyone who asks, not what it was steered towards.

From each answer we keep the product and company names it recommends. A name counts only when it appears in the answer as a proper name, is not a heading such as "Best for" or "Pricing", and is confirmed by a second assistant naming it too, by a website the answer cites, or by being the market leader named in the question. Share of voice is each brand's share of all brand mentions in the category this month. Assistants that could not answer this month are listed as not answering, never counted as naming nobody.

Cite this page

Permanent URL: https://mentionfox.com/ai-recommends/llm-api-providers
Last updated 2026-09-26
Which LLM API provider do AI assistants recommend? 6 assistants asked, September 2026. MentionFox, 2026-09-26. https://mentionfox.com/ai-recommends/llm-api-providers