Claude Sonnet 4: API’s Million Token Memory Magic!
Claude Sonnet 4’s memory has leveled up to a whopping 1 million tokens of context—via API only. Imagine remembering over 75,000 lines of code without breaking a sweat. It’s like giving an elephant a photographic memory, but with more bytes and less peanuts. Move over goldfish, Claude’s here to make waves!

Hot Take:
Claude Sonnet 4 just got a memory upgrade bigger than your grandma’s photo album, but only if you slide into its API DMs. It’s like giving your AI assistant a brain the size of Texas, but your other models are still stuck in Rhode Island.
Key Points:
- Claude Sonnet 4 can now remember up to 1 million tokens of context via API.
- This upgrade is 5 times more than the previous limit and perfect for large-scale code or document analysis.
- The 1 million token context limit is exclusive to Sonnet 4; Opus 4.1 remains with old limitations.
- Currently, only available through the Anthropic API for Tier 4 and custom rate limit customers.
- Future updates will allow Claude’s mobile and web apps to take advantage of this expanded memory.
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