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Claude Sonnet 5.5 · Rubik's cube, three turns
The episode says all four pass, Sol takes 2 hours 31 minutes and is still the cheapest, Sonnet is the most expensive, and Astra costs more than Opus. Sol's display is 151m 49s and the API-equivalent is $3.49. Sonnet is $18.19. Astra is $15.97 and Opus is $4.75. All four judge-pass. HERO rendered capture Unaided model Open this round
Measured harness ledgerPublic result
Claude Sonnet 5.5

Rubik's cube, three turns — Claude Sonnet 5.5

Complete the three-move Rubik's cube sequence D, F', U2 with regrasp, using two dexterous hands in MuJoCo.

Max reasoningHeadline result
Workflow cost
$18.19
Wall-clock
1h 40m 47s
Processed tokens
55,660,042 processed (fresh input 250 + cache read 54,529,306 + cache creation 670,063 + output including reasoning 460,423). Visible output 131,023 and reasoning output 329,400 are inside that output figure and are not added again.
Record state
additive_harness_projection
Public summary

Claude Sonnet 5.5 Rubik's cube, three turns: 1h 40m 47s, $18.19 API-equivalent estimate, 55,660,042 processed (fresh input 250 + cache read 54,529,306 + cache creation 670,063 + output including reasoning 460,423). Visible output 131,023 and reasoning output 329,400 are inside that output figure and are not added again..

Run identity and stack
  • Result ID: dex-cube-turn-mujoco-stage-2-three-moves-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 stage-2 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. This is the highest API-equivalent of the four unaided max ledgers. 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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