Unverified50% confidenceFactExact time
Opus 5.5 offers a context window of 1 million tokens and a maximum output of 128,000 tokens.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/29/2026
First Seen
Valid until: 12/28/2026
Sources
Related Entities
Related Claims
UnverifiedGrok 4.7's context window is 4 million tokens, while the Claude series flagship is 2 million tokens.67% similarUnverifiedThe entire project ultimately consumed approximately 2 billion tokens, with Fable 5 and Opus 5 each using about 800 million, Codex close to 400 million, and GROK using 76 million.63% similarUnverifiedClaude Sonnet 5.5 features a 1 million (1M) token context window.63% similar
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