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Measured harness ledgerPublic result
GPT-5.6 Terra

Infinite cathedral corridor shader — GPT-5.6 Terra Ultra

Generate an infinite stained-glass cathedral corridor shader with convincing depth, architectural repetition, light, and motion.

Ultra reasoningHeadline result
Workflow cost
$0.55
Wall-clock
20:39.8 wall-clock
Processed tokens
869K processed
Record state
partial_token_timing_and_artifact_ledger
Public summary

GPT-5.6 Terra Ultra partial_token_timing_and_artifact_ledger ledger: 20:39.8 wall-clock, 869K processed, and $0.55 API-equivalent estimate, not a subscription invoice.

Run identity and stack
  • Result ID: infinite-cathedral-shadertoy-gpt-5.6-terra-ultra
  • Technical model: gpt-5.6-terra
  • Provider: OpenAI Codex
  • Stack: OpenAI Codex
  • Stack: Technical model/configuration: gpt-5.6-terra
  • Stack: ShaderToy fragment shader
  • Stack: Harness v1 infinite cathedral prompt
Cost basis
  • Requests with more than 272,000 input tokens use long-context pricing; all 18 supplied calls were short-context.
  • Separately priced tools and non-token services are excluded.
Primary artifact integrity
  • Kind: shadertoy-fragment-shader
  • Path: artifacts/infinite-cathedral-shadertoy-gpt-5.6-terra-ultra/cathedral_corridor.frag
  • SHA-256: 71a8f9e3a035a5350cfa18a6b28e8f744487ab46bc3daf2f598c950a9d5e1230
Recorded caveats
  • Wall-clock is end-to-end latency, not model-only compute; it includes tool time and idle gaps between user turns.
  • Output tokens include hidden reasoning, visible prose/code, and tool-call JSON.
  • Cached input is deeply discounted, so total processed tokens overstate cost.
  • This is an API-equivalent estimate rather than the actual charge for a subscription-backed Codex session.
  • Separately priced tools and non-token services are excluded.
  • Cache-creation tokens are zero because the Codex transcript schema does not expose a cache-write field.
  • Subagent logs are excluded to avoid double-counting inherited parent context.
Visible evidence gaps
  • initial local FPS
  • optimized local FPS
  • RTX Pro 6000 1080p60 final capture
  • blind-evaluation record
Builder test available

This result is part of a Builder test. Open it for the exact prompt and any released projects, RemakeBench Harness workflows and production skills. Public proof and known evidence gaps stay visible here.

  • Tech Review 001 · v1
View Tech Review 001 · v1Return to GPT-5.6 Terra
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