Off-road Mud Game — GPT-5.6 Sol Max

Measured harness ledgerPublic result

Off-road Mud Game — GPT-5.6 Sol Max

Build a one-request procedural off-road driving game with vehicle physics, independent suspension, streamed terrain, mud feedback, and multiple cameras.

Max reasoningHeadline result

Workflow cost: $19.10
Wall-clock: 1h 2m 40.9s wall-clock
Processed tokens: 25.94M processed
Record state: partial_token_timing_source_build_ledger

Public summary

GPT-5.6 Sol Max partial_token_timing_source_build_ledger ledger: 1h 2m 40.9s wall-clock, 25.94M processed, and $19.10 Token-only standard API-equivalent estimate, not the actual Codex subscription charge.

Run identity and stack

Result ID: off-road-driving-game-threejs-gpt-5.6-sol-max
Technical model: gpt-5.6-sol
Provider: OpenAI Codex
Stack: OpenAI Codex
Stack: Technical model/configuration: gpt-5.6-sol
Stack: Three.js vehicle workflow
Stack: Harness v1 off-road prompt

Cost basis

The source receipt applies long-context rates only when a call exceeds 272,000 input tokens. It reports zero such calls.
No separately priced tool or non-token cost is included because verifiable transcript usage counts were not supplied.

Primary artifact integrity

Kind: ledger-checksummed-source-file
Path: artifacts/off-road-driving-game-threejs-gpt-5.6-sol-max/source/app/ExpeditionGame.tsx
SHA-256: 0b8d432e0de43e223ed85bfa1979f449063145567b22ab9fcd5f262379ec149e

Recorded caveats

Wall-clock is end-to-end workflow latency, including tools and idle gaps; it is not model-only compute time.
Output tokens include hidden reasoning, visible prose/code, and tool-call JSON.
Cache-read tokens are discounted, so total processed tokens substantially overstate cost.
The generated production output is deliberately not archived because its server-side build files contain a build-time prerender secret. The complete committed source required to regenerate it is archived instead.
The production build passes, but the supplied npm test command fails two stale starter-scaffold assertions. No independent browser acceptance, sustained-drive, local-FPS, seam, or suspension-articulation receipt is archived.
No final gameplay capture or blind evaluation is supplied.

Visible evidence gaps

independent browser acceptance run
local FPS, browser, viewport, and hardware receipt
multi-minute sustained-drive and generation-seam receipt
four-corner suspension-articulation receipt
final gameplay capture
blind-evaluation record

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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