Claude Opus 4.5

Claude Opus 4.5

Anthropic
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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

Step 3.5 Flash is an advanced open source foundation language model engineered for frontier reasoning and agentic capabilities with exceptional efficiency, built on a sparse Mixture of Experts (MoE) architecture that selectively activates only about 11 billion of its ~196 billion parameters per token to deliver high-density intelligence and real-time responsiveness. Its 3-way Multi-Token Prediction (MTP-3) enables generation throughput in the hundreds of tokens per second for complex multi-step reasoning chains and task execution, and it supports efficient long contexts with a hybrid sliding window attention approach that reduces computational overhead across large datasets or codebases. It demonstrates robust performance on benchmarks for reasoning, coding, and agentic tasks, rivaling or exceeding many larger proprietary models, and includes a scalable reinforcement learning framework for consistent self-improvement.

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

Developers, researchers, and AI engineers who want a powerful open source foundational AI model capable of fast, deep reasoning, coding assistance, and agentic task execution

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

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

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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

StepFun
Founded: 2023
China
static.stepfun.com/blog/step-3.5-flash/

Alternatives

Alternatives

MiMo-V2-Flash

MiMo-V2-Flash

Xiaomi Technology
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Claude Sonnet 4

Claude Sonnet 4

Anthropic
GLM-4.5

GLM-4.5

Z.ai

Categories

Categories

Integrations

GitHub
AiAssistWorks
Bash
C#
CSS
DataGrip
Devin
EasyClaw
Elixir
HTML
Java
JetBrains Junie
LaunchLemonade
Muse
OpenClaw
RustRover
Twigg
Verdent
Yonoo
Zo Computer

Integrations

GitHub
AiAssistWorks
Bash
C#
CSS
DataGrip
Devin
EasyClaw
Elixir
HTML
Java
JetBrains Junie
LaunchLemonade
Muse
OpenClaw
RustRover
Twigg
Verdent
Yonoo
Zo Computer
Claim Claude Opus 4.5 and update features and information
Claim Claude Opus 4.5 and update features and information
Claim Step 3.5 Flash and update features and information
Claim Step 3.5 Flash and update features and information