sonnet 4.5 in claude code - Brave Search

anthropic.com › news › claude-sonnet-4-5

Introducing Claude Sonnet 4.5

Claude Sonnet 4.5 is the best coding model in the world. It's the strongest model for building complex agents. It’s the best model at using computers. And it shows substantial gains in reasoning and math. Code is everywhere. It runs every application, spreadsheet, and software tool you use.

anthropic.com › claude › sonnet

Claude Sonnet 4.5

For Devin, Claude Sonnet 4.5 increased planning performance by 18% and end-to-end eval scores by 12%—the biggest jump we've seen since the release of Claude Sonnet 3.6. It excels at testing its own code, enabling Devin to run longer, handle harder tasks, and deliver production-ready code ...

Videos

Claude Sonnet 4.5 is HERE + Claude Code Upgrades - YouTube

September 30, 2025

Claude Code 2.0 + Claude Sonnet 4.5 is Finally Out! - YouTube

September 30, 2025

Claude Code with Sonnet 4.5 is actually incredible (with 1 exception) ...

September 30, 2025

Claude Coded: Sonnet 4.5, Claude Code 2.0, and more. - YouTube

October 6, 2025

Anthropic Sonnet 4.5 in Claude Code - YouTube

October 3, 2025

Hello Claude Sonnet 4.5! This thing is a BEAST! - YouTube

September 30, 2025

docs.claude.com › en › docs › about-claude › models › whats-new-sonnet-4-5

What's new in Claude Sonnet 4.5 - Claude Docs

Claude Sonnet 4.5 is our best coding model to date, with significant improvements across the entire development lifecycle: SWE-bench Verified performance: Advanced state-of-the-art on coding benchmarks · Enhanced planning and system design: ...

aws.amazon.com › blogs › aws › introducing-claude-sonnet-4-5-in-amazon-bedrock-anthropics-most-intelligent-model-best-for-coding-and-complex-agents

Introducing Claude Sonnet 4.5 in Amazon Bedrock: Anthropic’s most intelligent model, best for coding and complex agents | Amazon Web Services

September 29, 2025 - Claude Sonnet 4.5 demonstrates advancements in agent capabilities, with enhanced performance in tool handling, memory management, and context processing. The model shows marked improvements in code generation and analysis, from identifying optimal ...

simonwillison.net › 2025 › Sep › 29 › claude-sonnet-4-5

Claude Sonnet 4.5 is probably the “best coding model in the world” (at least for now)

September 29, 2025 - Claude Sonnet 4.5 is the best coding model in the world. It’s the strongest model for building complex agents. It’s the best model at using computers. And it shows substantial gains in reasoning and math.

anthropic.com › news › enabling-claude-code-to-work-more-autonomously

Enabling Claude Code to work more autonomously

We’re introducing several upgrades to Claude Code: a native VS Code extension, version 2.0 of our terminal interface, and checkpoints for autonomous operation. Powered by Sonnet 4.5, Claude Code now handles longer, more complex development tasks in your terminal and IDE.

every.to › vibe-check › vibe-check-claude-sonnet-4-5

Vibe Check: Claude Sonnet 4.5

September 29, 2025 - Sign up to get it in your inbox. Anthropic just rolled out Claude Sonnet 4.5, and, of course, we spent the weekend using it to code and running long agentic tasks with it.

augmentcode.com › changelog › claude-sonnet-4-5-is-now-available-as-the-default-model-in-augment-code

Claude Sonnet 4.5 is now available as the default model in Augment Code - Augment Code

September 29, 2025 - Starting today, Sonnet 4.5 is the default model for Augment Code, and will appear alongside GPT-5 in the model picker. Sonnet 4.5 delivers faster, more collaborative code generation and editing across all of our plans.

platform.claude.com › docs › en › about-claude › models › whats-new-claude-4-5

What's new in Claude 4.5 - Claude Docs

Claude Sonnet 4.5 is our best coding model to date, with significant improvements across the entire development lifecycle: SWE-bench Verified performance: Advanced state-of-the-art on coding benchmarks · Enhanced planning and system design: ...

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apidog.com › blog › claude-sonnet-4-5-in-claude-code

How to use Claude Sonnet 4.5 in Claude Code

September 30, 2025 - Claude Code scans your codebase (it groks entire repos thanks to that 200K token context). Try a natural language prompt like: “Write a Python function to sort a list of dictionaries by ‘price’ key.” · “Refactor this JavaScript module for better error handling.” · “Generate unit tests for my Express API endpoint.” · Let’s test it. I prompted: “Create a Node.js script to fetch and parse a JSON API.” Claude Sonnet 4.5 whipped up:

support.claude.com › en › articles › 12439373-getting-the-most-out-of-sonnet-4-5-in-claude-ai

Getting the most out of Sonnet 4.5 in Claude.ai | Claude Help Center

It thinks through problems more carefully, follows your instructions more precisely, and produces code that actually works—often on the first try. Thinking longer, and more strategically — Need to analyze a complex dataset, build a multi-feature application, or conduct deep research? Sonnet 4.5 can work independently for hours while maintaining perfect clarity about what you asked for.

medium.com › data-science-in-your-pocket › claude-4-5-sonnet-bye-bye-software-devs-7c35c244e357

Claude 4.5 Sonnet : Bye bye Software Devs | by Mehul Gupta | Data Science in Your Pocket | Medium

September 30, 2025 - Claude Sonnet 4.5 isn’t just another LLM release, it’s now the best coding model available. Stronger at software development, sharper at reasoning, and surprisingly good at handling math-heavy work.

github.blog › home › changelogs › anthropic claude sonnet 4.5 is in public preview for github copilot

Anthropic Claude Sonnet 4.5 is in public preview for GitHub Copilot - GitHub Changelog

September 29, 2025 - Claude Sonnet 4.5, Anthropic’s most advanced model for coding and real-world agents, is now rolling out in GitHub Copilot to Copilot Pro, Pro+, Business, and Enterprise. From our early testing,…

openrouter.ai › anthropic › claude-sonnet-4.5

Claude Sonnet 4.5 - API, Providers, Stats | OpenRouter

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with improvements across system design, code security, and specification adherence.

reddit.com › r/claudeai › claude sonnet 4.5 is here!

r/ClaudeAI on Reddit: Claude Sonnet 4.5 is here!

August 19, 2025 -

https://www.an.com/news/claude-sonnet-4-5

And Claude Code v2.0!

reddit.com › r/claudeai › updated to claude code 2.0 and i see sonnet4.5 as default finally!!

r/ClaudeAI on Reddit: updated to Claude Code 2.0 and I see Sonnet4.5 as default finally!!

September 29, 2025 -

it's stupid fast, that's the first thing I've noticed.

Yeah I just witnessed this real time. RIP Opus plan mode, though. Edit: doesn't really seem to matter though, I guess, if Sonnet 4.5 is measurably better. Kinda gives the vibe that Opus is in obsolete status.

cloud.google.com › blog › products › ai-machine-learning › announcing-claude-sonnet-4-5-on-vertex-ai

Announcing Claude Sonnet 4.5 on Vertex AI | Google Cloud Blog

September 30, 2025 - We’re also announcing Vertex ... operation. Powered by Claude Sonnet 4.5, Claude Code now handles longer, more complex development tasks than the previous version....

reddit.com › r/claudeai › claude sonnet 4.5 best ai for code generation, thoughts on worthy rivals?

r/ClaudeAI on Reddit: Claude Sonnet 4.5 best AI for code generation, thoughts on worthy rivals?

October 15, 2025 -

We have just plugged in Claude Sonnet 4.5 into our WordPress plugin solution and it is such a dream to use. We prefer plugging in the mid-end models that are not token-cost hungry and after extensive testing using this model to create for example a complex booking forms with calendar, it seems to do the best job out of our current list of AI service providers especially when it comes to refactoring code, adding more functions/features (e.g. modifying the form), theme and look and feel mods, and general optimisations. OpenAI with GPT-5 Mini and Nano is also pretty good, Grok on the other hand is not quite there with code generation yet.

What are your thoughts on Claude Sonnet 4.5?
Also, we wish to add another few AI providers, any recommendations?

I think Mistral is also quite good for coding. I use it when Claude gets something wrong, and have Mistral look at it with "fresh eyeballs" haha. So I switch between AI versions (I use paid AI aggregator to quickly switch between models)

Without reasoning, only by debuging and following specific instructions, solving a complex problem, nothing come close to claude. Glm and qwen code, codex too much trying to be perfectionist.

support.claude.com › en › articles › 12439380-create-professional-results-across-tools-with-claude-sonnet-4-5

Create professional results across tools with Claude Sonnet 4.5 | Claude Help Center

Claude Sonnet 4.5 is our most intelligent model for creating work deliverables. With code execution and file creation, Claude can build presentations, spreadsheets, and documents faster and with higher quality than before (currently limited ...

intuitionlabs.ai › home › articles › claude sonnet 4.5: model upgrades & code 2.0 features

Claude Sonnet 4.5: Model Upgrades & Code 2.0 Features | IntuitionLabs

October 7, 2025 - Sonnet 4.5 is touted as “the best coding model in the world” ([1]). It delivers huge gains in reasoning, mathematics and “using computers” compared to previous Claude models.