Unverified50% confidenceBenchmarkExact time
On the Frontier Code programming benchmark, Opus 5.5 beat Astra using the default tier, with a per-task cost of only one-fifth that of its competitor.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/29/2026
First Seen
Valid until: 12/28/2026
Sources
Related Entities
Related Claims
UnverifiedOn Frontier Code, Opus 5.5's medium tier (under $1 per task) actually scored higher than its max tier (over $5 per task).71% similarUnverifiedAcross all four groups and eight rounds of testing, Astra showed significant improvement over 5.6 in front-end design, game replication, and 3D interaction tasks, while 5.6's advantage lay in its speed.68% similarUnverifiedIn coding tests, Opus 5.5 performs best at the medium reasoning level, with score drops occurring at the high and ultra-high levels.66% similarUnverifiedIn the author's self-designed code review benchmark, Astra ranked first, Grok 4.7 came in second, and Fable 5.1 offered only 5 suggestions but of very high quality.65% similarUnverifiedOpus 5.5 is less token-efficient than Opus 5: Opus 5's max tier uses 73k tokens per task, Fable uses 78k, Opus 5.5's max tier approaches 120k tokens, while GPT-6 Astra only requires 27k.63% similar
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