Epoch AI evaluated GPT-5.6 Sol on Slay the Spire via computer-use plugins, finding that while the model reliably commands the UI and clears low ascensions (A4-A9), long-term strategic decision-making remains a key hurdle.

Key Takeaways

  • ✓Computer-use vision execution is reliable, successfully identifying complex UI elements and state transitions;
  • ✓Strategic planning latency is high, requiring 5-8 hours of thinking per run with occasional tactical misplays;
  • ✓Epoch initiated follow-up benchmarks on Slay the Spire 2 with live streamed autonomous agent runs on Twitch.
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Key Decision Metrics at a Glance

TL;DR Verdict
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GPT-5.6 Sol · in: $5 / out: $30
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🛠️ Ecosystem & IDERules
Cursor · Claude Code · API
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