Expired60% confidenceFactExact time
Claude Opus 4.8 reached 85.9% on the GraphWalks 256K subset (up from 76.9% for 4.7) and 68.1% on the full 1-million-token version, nearly double Opus 4.7's score of 40.3%
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Deep Dive into Claude Opus 4.8: The AI Paradox of Being More Honest Yet Better at Gaming Tests
bilibili皮皮蟹勇闯天涯6/1/2026
Related Claims
Partially VerifiedClaude Opus 4.8 scored 69.2% on the SWE-bench benchmark, compared to 58.6% for GPT 5.5 and 54.2% for Google Gemini.78% similarUnverifiedClaude Opus 4.8 scored 69.2% on SWEBench Pro, up from Opus 4.7's 64.3%77% similarUnverifiedClaude Opus 4.8 achieved a score of 1890 in agentic performance benchmarks, 137 points higher than the previous generation and 121 points ahead of GPT 5.5.75% similar
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