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Claude Sonnet 5.5 · Rubik's cube, single turn
The episode says all four pass, Sol is cheapest, and the Claude runs take longer while staying under 15 minutes. All four unaided max ledgers judge-pass. Sol's API-equivalent is $0.25. Opus is 9m 41s and Sonnet is 11m 25s. HERO rendered capture Unaided model Open this round
Measured harness ledgerPublic result
Claude Sonnet 5.5

Rubik's cube, single turn — Claude Sonnet 5.5

Turn one face of a Rubik's cube a quarter turn by finger contact with two dexterous hands in MuJoCo.

Max reasoningHeadline result
Workflow cost
$1.50
Wall-clock
11m 25s
Processed tokens
1,981,559 processed (fresh input 36 + cache read 1,787,260 + cache creation 133,712 + output including reasoning 60,551). Visible output 15,773 and reasoning output 44,778 are inside that output figure and are not added again.
Record state
additive_harness_projection
Public summary

Claude Sonnet 5.5 Rubik's cube, single turn: 11m 25s, $1.50 API-equivalent estimate, 1,981,559 processed (fresh input 36 + cache read 1,787,260 + cache creation 133,712 + output including reasoning 60,551). Visible output 15,773 and reasoning output 44,778 are inside that output figure and are not added again..

Run identity and stack
  • Result ID: dex-cube-turn-mujoco-sonnet-5.5-max-2026-09-30
  • Technical model: claude-sonnet-5-5
  • Provider: Anthropic Claude Code
  • Client: Claude CLI 2.1.286
  • Stack: MuJoCo dexterous-hand fixture
  • Stack: Harness cube-turn prompt
Cost basis
  • Wall clock is supplied_measurements.wall_clock_display. Cost is the recorded list-price total. Subscription charge is $0.
  • Source: supplied_measurements.token_usage.total_processed at harness commit 9b7c614dbb5103cc373fdf6275b5c4efc10d8f0e.
Validation evidence
  • Result: PASS
  • Verification: Task verdict is judge_pass_independently_replayed. The replay gate is that status. Additive projection from harness commit 9b7c614dbb5103cc373fdf6275b5c4efc10d8f0e. Broad harness sync was not run. Wall clock is supplied_measurements.wall_clock_display. Cost is the recorded list-price total. Subscription charge is $0. Source: supplied_measurements.token_usage.total_processed at harness commit 9b7c614dbb5103cc373fdf6275b5c4efc10d8f0e.
Recorded caveats
  • Judge pass. Cycles-hero sha256 matches.
  • Wall clock is supplied_measurements.wall_clock_display. Cost is the recorded list-price total. Subscription charge is $0.
  • Source: supplied_measurements.token_usage.total_processed at harness commit 9b7c614dbb5103cc373fdf6275b5c4efc10d8f0e.
Visible evidence gaps
  • additive projection; broad harness sync was not run
  • source harness commit 9b7c614dbb5103cc373fdf6275b5c4efc10d8f0e
Public result only

This result keeps its public summary and evidence, but it does not currently have a matching Builder test with prompts, projects, Harness workflows or skills.

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