Ranked · Best for

Best LLM APIs for coding, ranked

GLM-5.3 is a flagship candidate here: near-frontier agentic coding at a fraction of closed-frontier price, with a 1M-token context for repository-scale work.

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-5.3Near-frontier agentic coding at ~1/5 the price of the closed frontier; 1M-token context.Compare
Claude (Fable 5 / Opus)Leads on the hardest SWE tasks; highest price and token use.Compare
GPT-5.6 SolStrong on offensive-security and the hardest benchmarks.Compare
Kimi K3Open-weight peer tied with GLM-5.3 on the Intelligence Index.Compare
DeepSeek V4Open-weight agentic-coding alternative.Compare

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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

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