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OpenAI vs Anthropic: The Race to Control the Future of LLMs

Two of the world’s most powerful AI labs—OpenAI and Anthropic—are battling to define the future of large language models. Here’s how they compare.

OpenAI vs Anthropic

The Race to Control the Future of Large Language Models

As AI goes mainstream, two companies are shaping the future more than anyone else: OpenAI and Anthropic.

Both were born from the same place—concern over how AI might be built and used. But they’ve taken very different paths. One powers ChatGPT. The other powers Claude. One is partnered with Microsoft. The other with Amazon and Google.

Here’s how OpenAI and Anthropic stack up in the race for LLM dominance.

Founding Stories

OpenAI

  • Founded: 2015

  • Founders: Sam Altman, Elon Musk, Ilya Sutskever, others

  • Initial Mission: Open, safe AGI for all

  • Pivotal Moment: Pivoted to “capped-profit” in 2019 and accepted $1B from Microsoft

  • Flagship Product: ChatGPT (180M+ users, GPT-4)

Anthropic

  • Founded: 2021

  • Founders: Dario Amodei, Daniela Amodei (ex-OpenAI)

  • Reason for Leaving OpenAI: Disagreements over safety, commercial pressure

  • Funding: $7.3B+ from Amazon, Google, Spark Capital, others

  • Flagship Product: Claude (Claude 3.5 Opus, Sonnet, Haiku)

Core Products and LLMs

Company

Main Model

Notable Traits

OpenAI

GPT-4 / GPT-4o

High performance, integrated with Microsoft, multimodal

Anthropic

Claude 3.5 Opus

Long context, strong reasoning, aligned for safety

OpenAI Strengths:

  • Ecosystem dominance (ChatGPT, API, Azure, Microsoft Copilot)

  • Best general-purpose performance (GPT-4o)

  • Ubiquitous integrations (Zapier, Canva, Slack, etc.)

Anthropic Strengths:

  • Industry-best context window (200K+ tokens)

  • Trusted by enterprises focused on AI safety

  • More explainable/transparent architecture (Constitutional AI)

Monetization Strategies

OpenAI

  • ChatGPT Plus ($20/month)

  • API usage (token-based)

  • Enterprise + team plans

  • Embedded via Microsoft Copilot (Office 365, Teams, Azure)

Anthropic

  • Claude API (via Amazon Bedrock + their own platform)

  • Claude Pro ($20/month)

  • Partner integrations (Slack, Notion AI, etc.)

  • Enterprise model via Google Cloud + AWS

OpenAI has a broader consumer footprint; Anthropic is winning quietly in enterprise and developer circles.

Key Differences

Category

OpenAI

Anthropic

Business Model

B2C + B2B

B2B-first, API-led

User Base

180M+ via ChatGPT

No public numbers (millions of API users)

Partner

Microsoft

Amazon & Google

Philosophy

Scale-first, product-led

Safety-first, alignment-focused

Open Source

Closed

Semi-open (Claude API + research papers)

Multimodal

Yes (GPT-4o)

Early stage (limited image support)

Recent Milestones

  • OpenAI

    • GPT-4o launch (May 2024): Faster, multimodal, real-time

    • Custom GPTs ecosystem expanding

    • $2B+ ARR and rising

  • Anthropic

    • Claude 3.5 Opus released (June 2024): Outperforms GPT-4 in many evals

    • Raised $7B+ in under 2 years

    • Claude integrated into Slack, Notion, DuckDuckGo, and more

What’s Next

  • OpenAI is focused on:

    • Assistant-style interfaces

    • Multimodal integration

    • Dominating every consumer touchpoint via ChatGPT and Copilot

  • Anthropic is focused on:

    • Long-context enterprise agents

    • Trust, safety, and interpretability

    • Owning the infrastructure behind LLMs (via AWS & Bedrock)

What You Can Learn

  • Early differentiation (OpenAI = speed; Anthropic = safety) drives long-term positioning

  • API-first businesses can scale without consumer traffic—if the model quality delivers

  • Partnerships matter: Microsoft vs Amazon + Google is more than funding—it’s distribution power

  • You don’t need to be first, just trusted

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Marco Fazio Editor,
Latestly AI,
Forbes 30 Under 30

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