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Anthropic
anthropic.com › news › claude-3-5-sonnet
Introducing Claude 3.5 Sonnet
Claude 3.5 Sonnet is now available ... Vertex AI. The model costs $3 per million input tokens and $15 per million output tokens, with a 200K token context window......
Discussions

Claude 3.5 Sonnet Free context limit is really small
It says that when you're over the amount of tokens you get to send, the limit is based on tokens not messages, so let's say you get 200 tokens for free, you had used like 180 or something already, and that's why it's tell you you're over the limits, that is not the context widow but your token limit for those few hours. More on reddit.com
🌐 r/ClaudeAI
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June 22, 2024
Context window Claude 3.5 Sonnet
Maybe this will be helpful. https://x.com/ArtificialAnlys/status/1833163586895843754 More on reddit.com
🌐 r/perplexity_ai
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September 11, 2024
Claude 3.5 Sonnet vs GPT-4: A programmer's perspective on AI assistants
The post reads like its written by Claude as well. Hahaha More on reddit.com
🌐 r/ClaudeAI
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June 27, 2024
Is the entire 200k context window used?
Really easy way to check. Input a very large (around 450-500KB) text file into the prompt generator in the anthropic console it tells you the tokens your prompt is using there in the bottom left corner. Now throw it into this and compare: https://platform.openai.com/tokenizer It's not 1:1 scaling, but when I tried it last I think I got like 190K tokens. Not 100% positive I couldn't have added a little more though. More on reddit.com
🌐 r/ClaudeAI
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June 28, 2024
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16x Prompt
prompt.16x.engineer › blog › claude-sonnet-gpt4-context-window-token-limit
Claude 3.5 Sonnet vs GPT-4o: Context Window and Token Limit | 16x Prompt
In this post, we'll compare the latest models from OpenAI and Anthropic in terms of their context window and token limits. Claude 3.5 Sonnet output token limit is 8192 in beta and requires the header anthropic-beta: max-tokens-3-5-sonnet-2024-07-15.
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AWS
aws.amazon.com › about-aws › whats-new › 2024 › 08 › knowledge-bases-amazon-bedrock-anthropics-claude-3-5-sonnet
Knowledge Bases for Amazon Bedrock supports Anthropic’s Claude 3.5 Sonnet - AWS
August 23, 2024 - Anthropic’s Claude 3.5 Sonnet—the first model in the forthcoming Claude 3.5 model family—has a 200,000 context window (roughly 150,000 words, or around 300 pages of material) and raises the industry bar for intelligence, outperforming other generative AI models on a wide range of evaluations.
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Xuyun Zeng
xyzcreativeworks.com › home › blog › chatgpt vs claude 3.5 sonnet
ChatGPT vs Claude 3.5 Sonnet - Xuyun Zeng
July 12, 2024 - Swept away by Claude 3.5 Sonnet’s Artifacts, I further investigated whether Anthrophic’s alternative to OpenAI’s ChatGPT is something I should consider. Claude has a bigger context window of 200K tokens versus ChatGPT 4o’s 32K – 128K ...
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Neoteric
neoteric.eu › home › artificial intelligence › claude 3.5 sonnet vs. gpt-4o and gpt-4o mini — key differences
Best Comparison: Claude 3.5 Sonnet vs. GPT-4o & GPT-4o mini
January 13, 2025 - Claude 3.5 Sonnet offers a generous maximum context window of 200k tokens, which is equivalent to approximately 150,000 words or 300 pages.
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Oncely
oncely.com › blog › claude-3-5-sonnet-vs-gpt-4o-context-window-and-token-limit-2
Claude 3.5 Sonnet vs GPT-4o: Context Window and Token Limit
March 25, 2025 - Claude 3.5 Sonnet boasts a massive context window of 200,000 tokens, making it one of the most advanced AI models in terms of memory capacity. This extensive context window enables the model to process and retain a vast amount of information ...
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Anthropic
anthropic.com › claude › sonnet
Claude Sonnet 4.5
September 29, 2025 - Hybrid reasoning model with superior intelligence for agents, and 200K context window · Try ClaudeGet API access · New · Claude Sonnet 4.5 · Sep 29, 2025 · Sonnet 4.5 is the best model in the world for agents, coding, and computer use. It’s also our most accurate and detailed model for ...
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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 › en › about-claude › models › overview
Models overview - Claude Docs
3 - Claude Sonnet 4.5 supports a 1M token context window when using the context-1m-2025-08-07 beta header.
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Galileo AI
galileo.ai › blog › the complete guide to anthropic claude 3.5 sonnet
Claude 3.5 Sonnet Complete Guide: AI Capabilities & Limits | Galileo
August 22, 2025 - Transform Claude 3.5 Sonnet from ... coding performance · Custom Chain-of-Thought scoring validates whether Sonnet's 200K context window actually leverages the right information...
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GitHub
github.com › orgs › community › discussions › 168711
Claude Sonnet 4 says it is actually Claude Sonnet 3.5 · community · Discussion #168711
Please reload this page. ... Something went wrong. There was an error while loading. Please reload this page. ... As I know Claude Sonnet 4 now supports context window of 1M tokens size.
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Poe
poe.com › Claude-3.5-Sonnet
Claude-3.5-Sonnet - Poe
Anthropic's Claude 3.5 Sonnet using the October 22, 2024 model snapshot. Excels in complex tasks like coding, writing, analysis and visual processing. Has a context window of 200k of tokens (approximately 150k English words).
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Claude Ai
claude3.pro › claude-3-5-sonnet-200k-token-context-window-is-insane
Claude 3.5 Sonnet 200K Token Context Window is INSANE!
July 18, 2024 - In the rapidly evolving world of artificial intelligence and natural language processing, a groundbreaking development has emerged that’s set to revolutionize the way we interact with AI: Claude 3.5 Sonnet’s 200,000 token context window.
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Begins with AI
beginswithai.com › claude-3-5-sonnet
Claude 3.5 Sonnet: Must-Know Insights! - Begins w/ AI
July 5, 2024 - For Claude 3.5 Sonnet, Anthropic has maintained the impressive context window introduced with the Claude 3 family: 200,000 tokens.
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Aragon Research
aragonresearch.com › claude-sonnet-3-5
Claude Sonnet 3.5: Enhanced Context and Collaboration
June 25, 2024 - Claude Sonnet 3.5 introduces a larger context window, improved reasoning capabilities, and the ‘Artifacts’ feature, aiming to enhance both AI performance and collaborative workflows.
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GAI Audio Translation Archives
leonfurze.com › home › blog › hands on with claude 3.5 sonnet
Hands on with Claude 3.5 Sonnet - Leon Furze
June 26, 2024 - Here’s a high level overview of what it does including a video of the finished application: Because the Claude family of models is very capable at working with complex texts and has such a large context window, it’s perfect for working with ...
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TigerData
tigerdata.com › blog › retrieval-augmented-generation-with-claude-sonnet-3-5-and-pgvector
Retrieval-Augmented Generation With Claude Sonnet 3.5 ...
October 2, 2024 - The Anthropic family contains multiple models, including Claude Sonnet 3.5, and each model provides different types of performance and costs. Below is a side-by-side comparison of the Sonnet model and other members of the Anthropic family. If you’re unfamiliar with any of the terms in the table below, the following provides you with descriptions of each of the features: Input context window: the number of tokens the input context window supports
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Amazon Web Services
aws.amazon.com › generative ai › amazon bedrock › anthropic
Claude by Anthropic - Models in Amazon Bedrock – AWS
6 days ago - By default, Anthropic's Claude models have a 200,000 token context window enabling you to relay a large volume of information to Claude. This translates to roughly 150,000 words, or over 500 pages of material. Sonnet 4 and 4.5 now offers an expanded context length of 1 million tokens (preview).