Compare AI models

Specifications
Parameters
—320B
Context window
100k1M
API pricing
Cheapest input
—$0.04Relace
Cheapest output
—$0.23StreamLake

These models have no shared benchmark scores.

Overview
CompanyAnthropicZ.ai
Release dateAug 9 2023Aug 26 2026
AccessClosedOpen Weight
Model detailsView modelView model

Frequently asked questions

Claude Instant 1.2 and GLM-5.3-Flash don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Instant 1.2 shipped 1113 days before GLM-5.3-Flash, so benchmark comparisons should account for the intervening progress.

Context windows are 100k (Claude Instant 1.2) vs 1M (GLM-5.3-Flash). Claude Instant 1.2 is closed, while GLM-5.3-Flash is open weight.

Direct benchmark comparisons are unavailable — Claude Instant 1.2 and GLM-5.3-Flash don't publish scores on any of the same benchmarks.