Claude Fable 5 vs GPT-5.6 Luna Pro for venture capital
As of October 11, 2026, Claude Fable 5 ranks higher for company discovery and market maps, and GPT-5.6 Luna Pro ranks higher for investment memos. In 30 judged battles between them, Claude Fable 5 won 21 and GPT-5.6 Luna Pro won 1, and 8 were ties. Claude Fable 5 costs about 9 cents per answer, and GPT-5.6 Luna Pro under 1 cent.
Task scores are out of 100 and blend quality 70%, cost 15% and speed 15%.
When they met
- Investment memoGlean — enterprise search and work AI assistant across company knowledgeTie
- Investment memoSSI (Safe Superintelligence) — Ilya Sutskever's straight-shot ASI lab with no productClaude Fable 5 won
- Investment memoPoolside — code-focused foundation models targeting enterprise deploymentTie
- Investment memoWiz — cloud security platform, fastest-growing software company ever by some accountsTie
- Investment memoSkild AI — general-purpose robot brains built on massive internet-scale trainingClaude Fable 5 won
- Investment memoOpenEvidence — AI clinical answers for doctors, ad-supported, viral among physiciansClaude Fable 5 won
- Investment memoChainguard — secure software supply chain: hardened images as a subscriptionTie
- Investment memoTogether AI — open-model cloud: inference, fine-tuning, GPU clustersClaude Fable 5 won
Questions about Claude Fable 5 and GPT-5.6 Luna Pro
Is Claude Fable 5 better than GPT-5.6 Luna Pro for venture capital work?
As of October 11, 2026, Claude Fable 5 ranks higher for company discovery and market maps, and GPT-5.6 Luna Pro ranks higher for investment memos. In 30 judged battles between them, Claude Fable 5 won 21 and GPT-5.6 Luna Pro won 1, and 8 were ties. Claude Fable 5 costs about 9 cents per answer, and GPT-5.6 Luna Pro under 1 cent.
Which is better for company discovery, Claude Fable 5 or GPT-5.6 Luna Pro?
Claude Fable 5. On vcrouter's company discovery board it ranks 1st of 5 with a score of 63 out of 100, and GPT-5.6 Luna Pro ranks 3rd with 55. In 10 direct battles between them, Claude Fable 5 won 8 and GPT-5.6 Luna Pro won 0, and 2 were ties.
Which is better for market maps, Claude Fable 5 or GPT-5.6 Luna Pro?
Claude Fable 5. On vcrouter's market map board it ranks 1st of 5 with a score of 61 out of 100, and GPT-5.6 Luna Pro ranks 2nd with 61. In 10 direct battles between them, Claude Fable 5 won 7 and GPT-5.6 Luna Pro won 1, and 2 were ties.
Which is better for investment memos, Claude Fable 5 or GPT-5.6 Luna Pro?
GPT-5.6 Luna Pro. On vcrouter's investment memo board it ranks 1st of 5 with a score of 65 out of 100, and Claude Fable 5 ranks 2nd with 56. In 10 direct battles between them, GPT-5.6 Luna Pro won 0 and Claude Fable 5 won 6, and 4 were ties.
Which is cheaper, Claude Fable 5 or GPT-5.6 Luna Pro?
GPT-5.6 Luna Pro. It costs under 1 cent per answer on vcrouter's tasks, and Claude Fable 5 costs about 9 cents, about 11 times as much.
Which is faster, Claude Fable 5 or GPT-5.6 Luna Pro?
Claude Fable 5. Its median answer takes 29 seconds, and GPT-5.6 Luna Pro takes 31.