Context Window Visualiser

See how context window sizes compare across models. Simulate usage to spot capacity limits.

Simulated usage: 50% of context window

0%50%100%

Claude Opus 4.6Anthropic

500K / 1M used

Claude Sonnet 4.6Anthropic

200K

100K / 200K used

GPT-4.1OpenAI

524K / 1M used

GPT-4.1 miniOpenAI

524K / 1M used

Gemini 2.5 ProGoogle

500K / 1M used

Gemini 2.5 FlashGoogle

500K / 1M used

Llama 4 ScoutMeta

512K

256K / 512K used

DeepSeek R1DeepSeek

128K

64K / 128K used

Context windows as of April 2026. Bars scale relative to the largest window. Yellow at 80% usage. Red at 100%. Actual token counts depend on content type.