OpenAI · GPT-5.4
Older smallest OpenAI model still listed on the API pricing page; GPT-6 Luna is now cheaper.
Leader: Claude Opus 5.5 at 58
Leader: Claude Mythos 5.1 at 60.9%
Leader: Claude Fable 5.1 at 91.4%
Leader: Claude Opus 5.5 at 66.9%
Leader: Claude Opus 5.5 at 61.4%
Leader: GPT-6 Astra at 96.1%
Leader: GPT-5.6 Sol at 32.3%
Leader: GPT-6 Astra at 95%
Leader: Kimi K3 at 88.7%
Leader: Claude Opus 5.5 at 87.7%
Leader: Claude Fable 5 at 1506
| Result | Score | Reported by | Source |
|---|---|---|---|
| AA-Omniscience Index · xhigh | -29.5 index (-100 to 100) | independent | Artificial Analysis: GPT-5.4 nano (xhigh) ↗ |
| AutomationBench-AA (partial score) · xhigh | 6% | independent | Artificial Analysis: GPT-5.4 nano (xhigh) ↗ |