Claude Opus 5

Claude Opus 5

Anthropic
OpenAI o1

OpenAI o1

OpenAI
+
+

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About

Claude Opus 5 is Anthropic’s advanced everyday AI model built for coding, knowledge work, problem-solving, visual outputs, and production AI workflows. The model delivers stronger performance than Opus 4.8 at the same base price and is positioned as a cost-effective alternative close to Claude Fable 5 frontier intelligence. Claude Opus 5 supports configurable effort settings so users can optimize for intelligence, speed, or token efficiency. It performs especially well on software engineering, automation, computer use, scientific research, and knowledge work evaluations. The model is available on Claude Max, Claude Pro, Claude API, Claude Code, and other Claude platforms, with Fast mode available at a higher price. Built for developers, researchers, enterprises, and everyday Claude users, Claude Opus 5 helps teams complete complex tasks with stronger verification, careful iteration, and practical cost efficiency.

About

OpenAI o1 represents a new series of AI models designed by OpenAI, focusing on enhanced reasoning capabilities. These models, including o1-preview and o1-mini, are trained using a novel reinforcement learning approach to spend more time "thinking" through problems before providing answers. This approach allows o1 to excel in complex problem-solving tasks in areas like coding, mathematics, and science, outperforming previous models like GPT-4o in certain benchmarks. The o1 series aims to tackle challenges that require deeper thought processes, marking a significant step towards AI systems that can reason more like humans, although it's still in the preview stage with ongoing improvements and evaluations.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, AI agent builders, software engineering teams, researchers, enterprise AI teams, knowledge workers, Claude Max users, Claude Pro users, API developers, scientific teams, automation builders, and organizations that need advanced coding, reasoning, computer use, business automation, scientific research, visual outputs, configurable effort, and cost-effective frontier-level AI performance

Audience

Users interested in a powerful large language model capable of advanced reasoning

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$5 per 1M tokens (input)
$5 per million input tokens and $25 per million output tokens
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Claude Opus 5 feels like a really strong model from a developer’s point of view. It is built for the kind of work I actually care about: complex coding, long-running agents, repo-level reasoning, debugging, and professional workflows that need more than a quick answer. I like that Anthropic is positioning it as a big improvement over Opus 4.8 while still making it more cost-effective than Fable 5. That matters a lot if you are building coding agents or internal dev tools where the model may run through a lot of tokens across planning, editing, testing, and iteration. The long-running agent focus is probably the biggest win. If a model can stay organized through multi-step tasks, recover from mistakes, and keep making progress without constant hand-holding, that is exactly what developers need from the next wave of AI coding tools.

Cons

  • The main downside is that I would still want to test it hard before trusting it with production code. Launch claims are useful, but real codebases are messy, full of edge cases, and usually much harder than polished benchmark tasks. It is also not the cheapest model in the world. Even if it is more affordable than Fable 5, developers will still need to route tasks carefully and avoid using a premium model for simple work that a faster or cheaper model could handle.

Pros & Cons from Real Users

Pros

  • I’ve been using OpenAI’s o1 model for a few weeks now, and it’s really remarkable. What I love most is how deliberate it feels—it doesn’t just throw out answers; it actually “thinks” through complex problems. Whether it’s coding, science, or tough math problems, the level of reasoning is impressive. The way it handles structured outputs like JSON is a huge plus for developers, making data organization so much easier. I also appreciate how accessible it is, whether through ChatGPT Plus or the API—it’s super versatile for a range of applications.

Cons

  • There are some trade-offs with o1’s depth. It can be slower than previous models because of its more thoughtful reasoning, which takes some getting used to. If you’re new to AI or machine learning, the advanced features might feel a bit overwhelming at first. And you might need to tweak your workflows to account for the slightly longer processing times.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

OpenAI
Founded: 2015
United States
openai.com

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic

Alternatives

Claude Mythos 5

Claude Mythos 5

Anthropic
Amazon Nova

Amazon Nova

Amazon
Claude Sonnet 5

Claude Sonnet 5

Anthropic
Claude Opus 4.8

Claude Opus 4.8

Anthropic
Claude Opus 4.5

Claude Opus 4.5

Anthropic

Categories

Categories

Integrations

Amp
BLACKBOX AI
C
C#
C++
CSS
Elixir
Go
JavaScript
Julia
Kotlin
PHP
Python
R
Ruby
SQL
Scala
Shiori
TypeScript
Visual Basic

Integrations

Amp
BLACKBOX AI
C
C#
C++
CSS
Elixir
Go
JavaScript
Julia
Kotlin
PHP
Python
R
Ruby
SQL
Scala
Shiori
TypeScript
Visual Basic
Claim Claude Opus 5 and update features and information
Claim Claude Opus 5 and update features and information
Claim OpenAI o1 and update features and information
Claim OpenAI o1 and update features and information