GLM-5.3-Flash tops AA Intelligence Index with aggressive pricing

GLM-5.3-Flash Intelligence, Performance and Price Analysis

Z AI's GLM-5.3-Flash, released August 2026, scores 57 on the Artificial Analysis Intelligence Index—#1 out of 173 models. Input costs $0.15/1M tokens, output $0.50/1M tokens, with an 83% cache discount; the full eval cost $138.02. It supports text in/out, has a 400k-token context window, and is very verbose at 150M output tokens. The post does not disclose inference speed, parameter count, or architecture details.

Why it matters: Zhipu GLM-5.3-Flash tops Artificial Analysis' intelligence index at 57, beating 172 models with aggressive pricing ($0.15 input, 83% cache discount). Score capped at 72 because we only have benchmark numbers — no real-world usage reports yet, so the R axis is weak.