Expired50% confidenceFactExact time

Sonnet 5 supports an ultra-long context window of 1 million tokens.

1

Sources

50%

Confidence

Medium-term (~90 days)

Relevance

7/23/2026

First Seen

This claim has expired. It is kept for the record and no longer describes the current state.

Valid until: 10/21/2026(expired)

Sources

Claude Sonnet 5 Deep Dive: Impressive Benchmarks, Questionable Value — Just Use Opus 4.8?

Related Claims

UnverifiedSonnet 4.6 features a 1M (1,000,000) token context window, with a default of 200,000 tokens and an extension to 1,000,000 tokens available in the Beta version.79% similar UnverifiedSonnet 4.6 supports a single output of up to 64,000 tokens.70% similar

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