Claude Opus 4.5

Claude Opus 4.5

Anthropic
K2 Think

K2 Think

Institute of Foundation Models
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About

Claude Opus 4.5 is Anthropic’s newest flagship model, delivering major improvements in reasoning, coding, agentic workflows, and real-world problem solving. It outperforms previous models and leading competitors on benchmarks such as SWE-bench, multilingual coding tests, and advanced agent evaluations. Opus 4.5 also introduces stronger safety features, including significantly higher resistance to prompt injection and improved alignment across sensitive tasks. Developers gain new controls through the Claude API—like effort parameters, context compaction, and advanced tool use—allowing for more efficient, longer-running agentic workflows. Product updates across Claude, Claude Code, the Chrome extension, and Excel integrations expand how users interact with the model for software engineering, research, and everyday productivity. Overall, Claude Opus 4.5 marks a substantial step forward in capability, reliability, and usability for developers, enterprises, and end users.

About

K2 Think is an open source advanced reasoning model developed collaboratively by the Institute of Foundation Models at MBZUAI and G42. Despite only having 32 billion parameters, it delivers performance comparable to flagship models with many more parameters. It excels in mathematical reasoning, achieving top scores on competitive benchmarks such as AIME ’24/’25, HMMT ’25, and OMNI-Math-HARD. K2 Think is part of a suite of UAE-developed open models, alongside Jais (Arabic), NANDA (Hindi), and SHERKALA (Kazakh), and builds on the foundation laid by K2-65B, the fully reproducible open source foundation model released in 2024. The model is designed to be open, fast, and flexible, offering a web app interface for exploration, and with its efficiency in parameter positioning, it is a breakthrough in compact architectures for advanced AI reasoning.

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

Claude Opus 4.5 is ideal for developers, enterprises, and professionals seeking a highly capable, aligned, and efficient AI model for coding, research, and complex problem-solving

Audience

Researchers, developers, or institutions wanting a tool providing a model for mathematical or logical tasks, especially where resources are limited but performance is required

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

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
www.anthropic.com/news/claude-opus-4-5

Company Information

Institute of Foundation Models
United States
www.k2think.ai/k2think

Alternatives

Alternatives

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DeepSeek R1

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DeepScaleR

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GLM-4.1V

GLM-4.1V

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Claude Sonnet 4

Claude Sonnet 4

Anthropic
Inkling

Inkling

Thinking Machines Lab
Qwen3.6-27B

Qwen3.6-27B

Alibaba

Categories

Categories

Integrations

Brokk
C++
CSS
DataGrip
Gemini Enterprise Agent Platform
GoLand
HTML
Java
Microsoft Foundry
Model Context Protocol (MCP)
PrivatClaw
PyCharm
Rider
Ruby
RustRover
Snowflake
Sup AI
TypeScript
WebStorm
Xcode

Integrations

Brokk
C++
CSS
DataGrip
Gemini Enterprise Agent Platform
GoLand
HTML
Java
Microsoft Foundry
Model Context Protocol (MCP)
PrivatClaw
PyCharm
Rider
Ruby
RustRover
Snowflake
Sup AI
TypeScript
WebStorm
Xcode
Claim Claude Opus 4.5 and update features and information
Claim Claude Opus 4.5 and update features and information
Claim K2 Think and update features and information
Claim K2 Think and update features and information