Fresh Benchmark Snapshot (July 11): GPT-5.6 Sol Leads Artificial Analysis Index at 58.9%, Edging Claude Opus 4.8

BenchLM.ai·low signal

Independent Artificial Analysis Intelligence Index standings verified July 11 place GPT-5.6 Sol on top at 58.9%, followed by Claude Opus 4.8 at 55.7% and GPT-5.6 Terra at 55.0% — the first clear head-to-head ranking now that OpenAI's three-tier family (Sol/Terra/Luna) has settled two days post-launch. Developer consensus is crystallizing around Terra as the value pick, Sol as the benchmark leader, and Luna as the budget workhorse. The narrow ~3-point gap over Claude Opus 4.8 shows the frontier remains tightly clustered rather than decisively led.