If people can't even manage the current usage limit, imagine if Anthropic enabled this to subscribers. I'm guessing more people will be locked out after a day or two. Lol. Answer from Sponge8389 on reddit.com
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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 ...
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Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
September 29, 2025 - 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....
Discussions

Why isn't anyone asking Anthropic to give us access to Sonnet 4.5 1M in Claude Desktop, at least for Max subscribers..?
If people can't even manage the current usage limit, imagine if Anthropic enabled this to subscribers. I'm guessing more people will be locked out after a day or two. Lol. More on reddit.com
🌐 r/ClaudeAI
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October 7, 2025
Claude Sonnet 4.5 is here!
🌐 r/ClaudeAI
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August 19, 2025
[FEATURE] Add support for 1M Context on Claude Sonnet 4.5
Preflight Checklist I have searched existing requests and this feature hasn't been requested yet This is a single feature request (not multiple features) Problem Statement Add support for 1M Co... More on github.com
🌐 github.com
46
September 29, 2025
Sonet 4.5 is aware of its own context window
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. More on reddit.com
🌐 r/ClaudeAI
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October 4, 2025
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Anthropic
anthropic.com › claude › sonnet
Claude Sonnet 4.5
September 29, 2025 - Claude Sonnet 4.5 is excellent at software development tasks, learning our codebase patterns to deliver precise implementations. It handles everything from debugging to architecture with deep contextual understanding, transforming our development velocity.
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Cognition
cognition.ai › blog › devin-sonnet-4-5-lessons-and-challenges
Cognition | Rebuilding Devin for Claude Sonnet 4.5: Lessons and Challenges
September 29, 2025 - 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.
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Letta
letta.com › blog › introducing-sonnet-4-5-and-the-memory-omni-tool-in-letta
Introducing Claude Sonnet 4.5 and the memory omni-tool in Letta | Letta
September 30, 2025 - Claude 4.5 Sonnet is the first frontier model trained (publically) to be context-aware, released alongside a new memory tool for context management. Early reports suggest that the model is much more adept at understanding its context limitations ...
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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.
Find elsewhere
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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 - The announcement describes use ... 2025). Claude’s docs note that Sonnet 4 and 4.5 support a 1M context window with the appropriate beta header and eligibility (Context windows – Claude Docs, 2025)....
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Claude
docs.claude.com › en › docs › build-with-claude › context-windows
Context windows - Claude Docs
September 29, 2025 - 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.
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Anthropic
anthropic.com › news › context-management
Managing context on the Claude Developer Platform
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.
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Cline
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
September 29, 2025 - 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.
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Google Cloud
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 - Boost model performance and efficiency: Get the most out of Claude with supported features. Run large-scale jobs with batch predictions, analyze codebases with a 1 million token context window, reduce costs with prompt caching, and ground responses ...
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Claude Docs
platform.claude.com › docs › en › about-claude › models › whats-new-claude-4-5
What's new in Claude 4.5 - Claude Docs
1 month ago - 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 ...
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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...
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ClaudeLog
claudelog.com › home › faqs › what is context window
What is Context Window in Claude Code | ClaudeLog
November 11, 2025 - 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 ...
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Claude Docs
platform.claude.com › docs › zh-TW › build-with-claude › context-windows
上下文窗口 - Claude Docs
Claude Sonnet 4 和 4.5 支持 100 萬令牌的上下文窗口。此擴展上下文窗口允許您處理更大的文檔、維護更長的對話,並使用更廣泛的代碼庫。
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GitHub
github.com › anthropics › claude-code › issues › 8381
[FEATURE] Add support for 1M Context on Claude Sonnet 4.5 · Issue #8381 · anthropics/claude-code
September 29, 2025 - Add support for 1M Context on Claude Sonnet 4.5 · To use the 1M token context window, include the context-1m-2025-08-07 beta header in your API requests · No response · Medium - Would be very helpful · CLI commands and flags · No response ...
Published   Sep 29, 2025