Anthropic vs 
OpenAI
Verdict
- Anthropic's flagship leads: Claude Opus 5.5 at 72.6 vs GPT-6 Astra at 70.4.
- Anthropic has the better model in 4 of 4 price bands.
- OpenAI's fastest ranked model (GPT-5.4 Mini, 255 tok/s) beats Anthropic's (Claude Haiku 5.5, 190 tok/s).
- OpenAI publishes more open-weights models (3 vs 0).
- OpenAI ships more often: one model every 22 days against every 39.
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | Anthropic | OpenAI |
|---|---|---|
| Under $0.50/M | Claude Haiku 5.5 xhigh 61.5$0.200/M | GPT-6 Luna max 60.0$0.200/M |
| Under $2/M | Claude Haiku 5.5 xhigh 61.5$0.200/M | GPT-6 Luna max 60.0$0.200/M |
| Under $10/M | Claude Opus 5.5 max 72.6$8.00/M | GPT-6.1 Sol max 69.9$4.00/M |
| Any price | Claude Opus 5.5 max 72.6$8.00/M | GPT-6 Astra max 70.4$20.00/M |
Line-up
| Metric | Anthropic | OpenAI |
|---|---|---|
| Flagship index | 72.6 | 70.4 |
| Ranked models | 23 | 44 |
| Open-weights models | 0 | 3 |
| Cheapest ranked, $/M | $0.200 | $0.093 |
| Fastest ranked, tok/s | 190 | 255 |
| Release cadence, days | 39 | 22 |
| Last release | 7 Oct 2026 | 29 Sept 2026 |
| Next expected | 30 Oct 2026 – 30 Nov 2026 | 12 Oct 2026 – 29 Oct 2026 |