Ranked · Best for

Best long-context model APIs, ranked

GLM-5.3’s 1M-token context window fits whole codebases, contract sets, or literature bundles in a single call — verify retrieval and citation accuracy on your own documents before relying on it.

Ranked by a stated method

Ranking combines the Artificial Analysis Intelligence Index, task-specific evaluation results where independently reproduced, and price per million tokens. Vendor-only claims are excluded from the ranking itself and shown separately where relevant.

Candidates

ModelWhy it ranks hereFull comparison
GLM-5.31M-token context at a fraction of closed-frontier price; verify citation accuracy per use case.View
Claude (Fable 5 / Opus)Strong long-context reasoning; higher price per token.Compare
Gemini 3.1 ProLong context plus multimodal document input.Compare

Ready to test the workflow?

Create account & add credits

This is not a universal winner

A ranked list compresses many workloads into one order. Check the linked comparison for your specific workload before deciding — especially where modality support or self-host requirements are the deciding factor.

Frequently asked questions

Where is the live GLM-5.3 model page?

The canonical model page with current OneInfer pricing, capabilities, and availability is /models/zai-org/GLM-5.3. This page is a focused facet of that entity, not a replacement for it.

How should I treat benchmark or price claims?

Check each claim’s provenance label and observed date. Vendor-reported and independently verified numbers are shown as separate evidence classes on this hub.

Put GLM-5.3 to work

Fund a controlled evaluation, start with a prepared prompt, and measure quality and cost on your own workload.