Four New Models Reshape the Cost-Performance Frontier, Opus 5.5 Tops Intelligence Index
Four new models—MiMo-V2.6-Pro, Claude Opus 5.5, GPT-6 Luna, and GPT-6 Sol—reshaped the intelligence-versus-price frontier this week. Opus 5.5 leads with a score of 58 but costs $5.98 per task, versus just $0.07 for GPT-6 Luna.
2026-09-23 ~ 2026-09-24 · 2 related posts
- Episode 1: OpenAI Launches GPT-6 Sol and Luna at Half the Price(2026-09-23, 92 posts)
- Episode 2: GPT-6 Sol/Luna Early Reviews Split: Quality Regression Complaints Meet Halved Pricing(2026-09-23, 6 posts)
- Episode 3: LMArena Opens GPT-6 Sol and Luna for Public Testing(2026-09-23, 2 posts)
- Episode 4: Four New Models Reshape the Cost-Performance Frontier, Opus 5.5 Tops Intelligence Index(2026-09-23, 2 posts)
- Episode 5: GPT-6 price cuts ignite OpenAI-Anthropic price war(2026-09-23, 3 posts)
- Episode 6: Tests Show GPT-6 Sol Scales Nearly Linearly With Effort(2026-09-23, 3 posts)
- Opus 5.5 leads at $5.98/task while GPT-6 Luna costs just $0.07 — a 85x gap — haider1 · 2026-09-23
- Claude Opus 5.5 tops Artificial Analysis at 58; four new models add 11 Pareto frontier points — ArtificialAnlys · 2026-09-24