Model index
Models by usage
AI models ranked by spend share and developer adoption for October 2026 (partial). Developer share is the percentage of distinct developers who used a given model family.
Updated 10/26/2026
October MTD Model Usage
Model families observed
82
Showing top 10 model families by spend share · 72 grouped as Other in pie chart
Model usage over time
Monthly spend share for a single model family. Only months with spend for that model are shown.
3 months with usage for Claude Opus 5. Faded bars with dashed outline indicate an incomplete month.
Model usage by month
Top 10 model families in October 2026 (partial) by spend share. Green ↑ / red ↓ show rank change vs the prior month.
Share by model family
Top 10 model families by spend share, remainder grouped as Other.
Total shown: 100.0%
Top 10 of 82 model families by spend share · Green ↑ / red ↓ vs prior month
Scroll to see all columns.
# 1↑4 | Claude Opus 5.5 | 43.9% |
# 2↑1 | Claude Fable 5.1 | 12.1% |
# 3↓2 | Claude Opus 5 | 8.3% |
# 4↑15 | Claude Sonnet 5.5 | 8.3% |
# 5↑4 | Grok 4.7 | 7.9% |
# 6↓4 | Claude Sonnet 5 | 4.3% |
# 7 | Gpt 5.6 Sol | 2.7% |
# 8↓2 | Claude Opus 4.8 | 2.6% |
# 9↓5 | Claude Fable 5 | 2.5% |
# 10↓2 | Cursor Grok 4.6 | 1.0% |