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Dec 19 4:00 PM EST

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To: Johnny Canuck who wrote (10602)

11/20/2025 9:50:30 PM

From: Sun Tzu

Read Replies (1) of 10704

Some comparison of popular AI.
The most impressive thing here is that with 128k context window, ChatGPT is competitive with Gemini with a 10x larger context.

?? Context Window Sizes of Popular AI Models Model / Platform Context Size Notes

ChatGPT (GPT-4 Turbo)	128k tokens	Available in GPT-4 Turbo via OpenAI; used in ChatGPT Plus and API.
Claude 2.1 / 3 Opus	200k – 1M tokens	Claude 2.1 supports 200k; Claude 3 Opus supports up to 1 million tokens.
Gemini 1.5 Pro	Up to 1M tokens	Tiered pricing model; full 1M context available in enterprise and developer tiers.
Grok 4 (xAI)	Up to 128k tokens	Matches GPT-4 Turbo; optimized for code and real-time data.
You.com (YouChat)	~32k tokens	Based on open-source models like Mixtral or GPT-J; context size varies by backend.
Perplexity AI (using Claude/GPT)	Up to 128k–200k tokens	Depends on which model is active (Claude or GPT-4 Turbo).
DeepSeek-V2	Up to 32k tokens	Open-source Chinese model; context expanding in newer versions.
Meta LLaMA 3 (70B)	Up to 8k–32k tokens	Context size depends on fine-tuning and deployment; not yet competitive at scale.

Sources: Appscribed comparison, Leanware AI showdown, FlexOS context guide

?? What Does This Mean for You?

Claude 3 Opus and Gemini 1.5 Pro are currently the leaders in long-context reasoning—ideal for legal documents, codebases, or multi-turn simulations.
GPT-4 Turbo (ChatGPT) is highly efficient at 128k, especially for structured tasks and retrieval.
Grok is competitive in context size but optimized more for real-time and code-heavy tasks.
YouChat and DeepSeek are best for lightweight use, not deep context modeling.

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