Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
Teams can explore and validate ... known for. Sonnet 4.5 represents a new generation of coding models. It's surprisingly efficient at maximizing actions per context window through parallel tool execution, for example running multiple bash commands at once....
Reddit
reddit.com › r/claudeai › sonet 4.5 is aware of its own context window
r/ClaudeAI on Reddit: Sonet 4.5 is aware of its own context window
October 4, 2025 -
https://cognition.ai/blog/devin-sonnet-4-5-lessons-and-challenges
Top answer 1 of 5
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The it knows of its own context makes it pretty fucking Lazy. Because if it reaches over 50% it starts just putting TODOs in the code and marking the Task done because "It's a massive undertaking and would take Ages. Let's just add a TODO" Had to set hooks up for that which call it a lazy piece of shit each time it tries that.
2 of 5
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Weren't people saying that the 1m context model capped at 200k context felt smarter than the 200k model? This does explain that. Sorry, It's late and I can't find sources, it was a few days ago.
Videos
01:21
Claude plays Catan: Managing agent context with Sonnet 4.5 - YouTube
11:35
Anthropic Claude 4.5 Models: Understanding the Context Window - ...
09:13
Claude Code: 1 Million Tokens + Unlimited Agents Changes Everything ...
r/GithubCopilot on Reddit: Claude Sonnet 4's 1M Context Window ...
04:34
Claude Coded: Sonnet 4.5, Claude Code 2.0, and more. - YouTube
r/ClaudeAI on Reddit: Introducing Claude Haiku 4.5: our latest ...
Claude
docs.claude.com › en › docs › build-with-claude › context-windows
Context windows - Claude Docs
Claude Sonnet 4.5 and Claude Haiku 4.5 feature context awareness, enabling these models to track their remaining context window (i.e. “token budget”) throughout a conversation.
Claude Docs
platform.claude.com › docs › en › about-claude › models › whats-new-claude-4-5
What's new in Claude 4.5 - Claude Docs
Advanced context management: Sonnet 4.5 maintains exceptional state tracking in external files, preserving goal-orientation across sessions. Combined with more effective context window usage and our new context management API features, the model optimally handles information across extended sessions to maintain coherence over time.
Skywork
skywork.ai › home › claude 4.5 context length: how extended memory improves conversations
Claude 4.5 Context Length & Extended Memory Explained
September 30, 2025 - Extended memory is the notebook ... of 2025‑09‑30, Anthropic states that Claude Sonnet 4 and 4.5 can support very large windows in developer environments....
Claude Docs
platform.claude.com › docs › en › build-with-claude › context-windows
Context windows - Claude Docs
Claude Sonnet 4.5 and Claude Haiku 4.5 feature context awareness, enabling these models to track their remaining context window (i.e. "token budget") throughout a conversation. This enables Claude to execute tasks and manage context more effectively ...
ClaudeLog
claudelog.com › home › faqs › what is context window
What is Context Window in Claude Code | ClaudeLog
The context window is Claude's memory capacity for a single conversation. It includes your messages, Claude's responses, file contents, and tool outputs. Most Claude models have a 200K token context window, but Claude Sonnet 4.5 via API offers ...
Medium
medium.com › llm-stats › claude-sonnet-4-5-complete-guide-pricing-context-window-and-api-5e9c550daafd
Claude Sonnet 4.5: Complete Guide, Pricing, Context Window, and API | by Seb Crossa | LLM Stats | Medium
September 30, 2025 - Compared to GPT-5 and Gemini 2.5 ... success rates among tested models · Competitive context window size: 200k tokens with intelligent summarization...
Claude
support.claude.com › en › articles › 8606394-how-large-is-the-context-window-on-paid-claude-plans
How large is the context window on paid Claude plans? | Claude Help Center
Note: Users on Enterprise plans have access to a 500K context window when chatting with Claude Sonnet 4.5. See What is the Enterprise plan?
Cognition
cognition.ai › blog › devin-sonnet-4-5-lessons-and-challenges
Cognition | Rebuilding Devin for Claude Sonnet 4.5: Lessons and Challenges
Sonnet 4.5 is efficient at maximizing actions per context window through parallel tool execution -running multiple bash commands at once, reading several files simultaneously, that sort of thing.
Anthropic
anthropic.com › news › context-management
Managing context on the Claude Developer Platform | Claude
September 29, 2025 - With our latest model, Claude Sonnet 4.5, these capabilities enable developers to build AI agents capable of handling long-running tasks at higher performance and without hitting context limits or losing critical information.
Anthropic
anthropic.com › claude › opus
Claude Opus 4.5
Hybrid reasoning model that pushes the frontier for coding and AI agents, featuring a 200K context window ... Claude Opus 4.5 is our most intelligent model to date. It sets a new standard across coding, agents, computer use, and enterprise workflows.
AWS
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 - Sonnet 4.5 features in the Amazon Bedrock API Here are some highlights of Sonnet 4.5 in the Amazon Bedrock API: Smart Context Window Management – The new API introduces intelligent handling when AI models reach their maximum capacity.
Caylent
caylent.com › blog › claude-haiku-4-5-deep-dive-cost-capabilities-and-the-multi-agent-opportunity
Claude Haiku 4.5 Deep Dive: Cost, Capabilities, and the Multi-Agent Opportunity | Caylent
Claude Haiku 4.5 supports a 200,000 token context window with up to 64,000 output tokens. The model processes both text and images, and it's Anthropic's first Haiku model to include extended thinking, computer use, and context awareness capabilities.
Milvus
blog.milvus.io › ai-quick-reference › whats-the-recommended-context-window-size-for-claude-opus-45-production-workloads
What’s the recommended context window size for Claude Opus 4.5 production workloads?
Claude Opus 4.5 supports a 200K-token context window, but for production workloads developers are encouraged to use smal
Data Studios
datastudios.org › post › claude-ai-how-context-window-token-limits-and-memory-work-across-the-claude-4-5-model-family
Claude AI: How context window, token limits, and memory work across the Claude 4.5 model family
2 weeks ago - Claude’s architecture is built around extended context memory. The Claude 4.5 series allows users to input, process, and reference extremely large volumes of text across a single conversation.
Cline
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
Claude Sonnet 4.5 by Anthropic is now available in Cline. With a 200k context window at the same $3/$15 pricing as Sonnet 4, this update doubles down on reliability, terseness, and stateful project memory — and Cline is the ideal environment to unlock it.
Reddit
reddit.com › r/chatgpt › claude sonnet 4.5 is officially released
r/ChatGPT on Reddit: Claude sonnet 4.5 is officially released
July 14, 2025 -
I tried it. He's more imaginative with his stories and really adds relevant details. He's also started recognizing pictures well.
For me, chatgpt no longer makes sense. I've been an active subscriber since 3.5, shortly before the release of version 4.
Bye, openai.