Claude by Anthropic
A family of foundational AI models
OpenAI o1
AI that can do general-purpose complex reasoning
Updated February 2026
| Claude by Anthropic | OpenAI o1 | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 622 | 11 |
| Pros | 17 | 1 |
| FactScore™ | 138.6 | 54 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Claude by Anthropic — Pros
AI assistant Code generation Contextual understanding Reasoning capabilities Data analysis Nuanced responses Creative writing Ethical AI Fast performance User-friendly interface Reliable Long context windows Natural language understanding Reliable outputs Context aware Git integration MCP integrationBoth tools — Pros
—Only in OpenAI o1 — Pros
Ai featuresOnly in Claude by Anthropic — Cons
Message limits Typography issues Contextual understanding Limited image output Conversation search Creative writing Image quality inconsistencies Inaccurate image generation Limited logo variety Limited output flexibility Long context windows No plugin support No web browsing Pptx upload limitation Reliable outputs User-friendly interfaceBoth tools — Cons
—Only in OpenAI o1 — Cons
Difficulty canceling subscription Limited conditional logic complexityDetails
| Claude by Anthropic | OpenAI o1 | |
|---|---|---|
| Categories | LLMs, AI Chatbots | LLMs |
| Platforms | Web · iOS · Android | Web |
| Became Popular | July 12, 2023 | September 13, 2024 |
| Website | www.anthropic.com | openai.com |
Who Should Pick Which?
Choose Claude by Anthropic if...
- AI assistant
- Code generation
- Contextual understanding
Choose OpenAI o1 if...
- Ai features
With a FactScore™ of 138.6 vs 54, Claude by Anthropic leads in community reception. Claude by Anthropic uniquely offers AI assistant and Code generation, while OpenAI o1 stands out for Ai features.
What Users Say
Claude by Anthropic
Claude excels at following complex instructions and producing structured outputs. The longer context window was crucial for our codebase, and it's genuinely better at reasoning through architectura...
Claude by Anthropic has been instrumental in building Super. The team chose Claude as the primary language model because of its superior reasoning capabilities and contextual understanding. Claude ...
Claude is one of our go-to models in Oz for long-context reasoning, code understanding, and complex multi-step tasks. It’s especially strong at following instructions and staying coherent across la...
OpenAI o1
We power our AI chart generation through o1 to get high quality visualizations for any data question. o1 is able to deeply understand any data source, including complex custom databases.
ChatGPT Pro includes o1 pro mode, a version of o1 that uses more compute to think harder and provide even better answers to the hardest problems.
OpenAI's o1 model, with its advanced reasoning and planning capabilities, significantly enhances our decision-making process.
Related Comparisons
Frequently Asked Questions
Which is better, Claude by Anthropic or OpenAI o1?
Based on FactScore™, Claude by Anthropic leads with a score of 138.6 vs 54. Claude by Anthropic has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Claude by Anthropic compared to OpenAI o1?
Claude by Anthropic uniquely offers: AI assistant, Code generation, Contextual understanding, Reasoning capabilities, Data analysis.
What are the pros of OpenAI o1 compared to Claude by Anthropic?
OpenAI o1 uniquely offers: Ai features.
Is Claude by Anthropic better rated than OpenAI o1?
Claude by Anthropic is rated 5.0★ from 622 reviews. OpenAI o1 is rated 5.0★ from 11 reviews.
What is the FactScore™ of Claude by Anthropic and OpenAI o1?
FactScore™ weighs rating and review volume together. Claude by Anthropic scores 138.6 and OpenAI o1 scores 54.
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