context window means The maximum amount of text an LLM can "see" at once, measured in tokens. It's mostly used in casual online conversation. It's casual and generally safe with friends and online. It's standard online vocabulary; nothing inherently concerning about hearing it.
context window
The maximum amount of text an LLM can "see" at once, measured in tokens.
ˈkɒn.tekst ˈwɪn.doʊDocumented since 2010s2010sGen AlphatrendingCurrent578 viewsLast reviewed Jun 29, 2026＋ Add a definition
Seen in the wild
4 citations · last seen May 2026
Etymology timeline
Born ~2018 · 1 year of recorded useSeen in the wild
BlueskyMay 2026
Grok 4.3 supports a 1 million token context window and is priced at $1.25/m input and $2.50/m output. Create an API key and start building: https://t.co/JDRUt1UOUm (2/2)
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BlueskyMay 2026
I don't think the current context window sizes can handle infinite wishes. Best to ask for 10-12 wishes :)
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BlueskyMay 2026
*bangs on Claude's context window* you can fit so few things in this baby
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BlueskyMay 2026
Extreme brevity also the best approach because the longer you can go without hitting the context window the better.
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Wikipedia: GloVe
As log-bilinear regression model for unsupervised learning of word representations, it combines the features of two model families, namely the global matrix factorization and local context window methods.
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Definitions
US-TECH
+876100%
#1·Apr 23, 2026US-TECHWork-OK
The maximum amount of text an LLM can "see" at once, measured in tokens. Longer windows let models process whole codebases or novels in a single request. Claude's 1M-token context unlocked whole-repo pair programming in 2025.
"Claude Opus 4.7 has a 1M-token context window — you can dump a whole repo in."
Origin: Tech / AI / developer industry term.
For parents
context window means The maximum amount of text an LLM can "see" at once, measured in tokens. It's mostly used in casual online conversation. It's casual and generally safe with friends and online. It's standard online vocabulary; nothing inherently concerning about hearing it.
For ESL learners
"context window" is slang. It means: The maximum amount of text an LLM can "see" at once, measured in tokens. Register: casual. Use it in: casual conversation and online posts. Avoid in: formal writing and professional emails.
Cluster: technology
Heard in the wild
“Grok 4.3 supports a 1 million token context window and is priced at $1.25/m input and $2.50/m output. Create an API key and start building: https://t.co/JDRUt1UOUm (2/2)”
— Bluesky· May 2026“I don't think the current context window sizes can handle infinite wishes. Best to ask for 10-12 wishes :)”
— Bluesky· May 2026“*bangs on Claude's context window* you can fit so few things in this baby”
— Bluesky· May 2026“Extreme brevity also the best approach because the longer you can go without hitting the context window the better.”
— Bluesky· May 2026“As log-bilinear regression model for unsupervised learning of word representations, it combines the features of two model families, namely the global matrix factorization and local context window methods.”
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Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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⚡About Tech, Dev & AI slang
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Related terms
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Semantically related
- context collapse73%
When an LLM's context window fills up with too much scattered history and it starts losing track of the actual task. The 1M-token era made this a common failure mode.
- token67%
The unit LLMs read and produce — roughly 3/4 of a word in English. Context windows, pricing, and rate limits are all measured in tokens. "The prompt was 8k tokens and cost 3 cents." Tokens are the chemistry of generative AI; everything technical eventually reduces to them.
- Claude Code61%
Anthropic's CLI that turns Claude into an agentic pair-programmer with filesystem, shell, and web access. Central to the rise of agentic coding in 2025.
- MCP60%
Model Context Protocol — Anthropic's open spec for letting LLMs talk to external tools and data sources via a uniform interface. The plumbing layer for agentic AI in 2025-2026.
- tool use58%
The ability of an LLM to call external functions (search, code execution, databases) mid-conversation. The building block of agentic systems.