Unverified50% confidenceBenchmarkExact time
For the same failing test fix, Haiku costs only about one-sixth of a cent—17 times cheaper than Sonnet—and completes in 6 seconds (compared to 10 seconds for Sonnet).
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/11/2026
First Seen
Valid until: 1/9/2027
Sources
Related Entities
Related Claims
UnverifiedSlack's principal engineer reported that, without modifying existing prompts, Sonnet 5.5 performs better and faster, with output tokens reduced by approximately 14%.67% similarUnverifiedThe improvement in agentic capabilities is accompanied by exponential growth in token consumption, and Sonnet 5's token consumption in maximum-effort mode is comparable to OPUS but with worse results.64% similar
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