OpenAI compatible API · Attested · Public status

Z.ai: GLM 5.2 vs Z.ai: GLM 5.3

Z.ai: GLM 5.2 vs Z.ai: GLM 5.3: compare current API pricing, context, provider routes, privacy, p50 latency, and OpenAI-compatible access.

Verify gateway

Onebase URL to migrate

100sof models and routes

0prompt or output logs. Always.

Compare routesProviders, price, context, and policy posture in one view.

Use auto when uptime mattersKeep a primary model and let fallback handle provider failures.

Same API shapeUse the OpenAI client and set the model you want.

Practical read

Monthly evidence

Z.ai: GLM 5.2 has the lower published input-plus-output rate and the lower measured p50 time to first token. Both have 31 Credits provider routes. Their context windows are the same size.

$2.2999/1MZ.ai: GLM 5.2 cheapest route

$3.458818/1MZ.ai: GLM 5.3 cheapest route

591 msZ.ai: GLM 5.2 fastest measured p50 TTFT via friendli

1085 msZ.ai: GLM 5.3 fastest measured p50 TTFT via sail-research

The price comparison adds each route's rate for one million input tokens and one million output tokens; your cost depends on your input/output mix. Prices and live route measurements can change. Use the monthly reports when you need a stable evidence window, then run a small task-specific eval before choosing a production default.

Z.ai: GLM 5.2Z.ai: GLM 5.3

Model idz-ai/glm-5.2z-ai/glm-5.3

Publisher Z.AI Z.AI

AI IQ IQ 119#42 IQ 125#23

Context1,048,576 tokens1,048,576 tokens

Credits provider routes3131

Cheapest route$2.2999/1M$3.458818/1M

Cached input$0.110775/1M to $0.990645/1M$0.133141/1M to $1.02546/1M

Privacy posturehas Confidential route (E2EE + ZDR)has Confidential route (E2EE + ZDR)

Fastest measured p50 TTFT591 ms via friendli1085 ms via sail-research

Highest measured throughput207 tok/s via baseten331 tok/s via makora

Recent route uptime range88.89% to 100.00%91.67% to 100.00%

Modes chat chat

Z.ai: GLM 5.2 routes

Overview31 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Z.ai: GLM 5.3 routes

Overview31 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Related comparisons

Browse every comparison

Z.ai: GLM 5.2 vs Z.ai: GLM 5.3 Flash62 combined provider routes
Z.ai: GLM 5.3 vs Z.ai: GLM 5.3 Flash62 combined provider routes
MoonshotAI: Kimi K3 vs Z.ai: GLM 5.258 combined provider routes
MoonshotAI: Kimi K3 vs Z.ai: GLM 5.358 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.257 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.357 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.254 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.354 combined provider routes

Production choice

Pick a default model. Keep fallback enabled.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

OpenAI clientPython

client = OpenAI(
    base_url="https://api.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="z-ai/glm-5.2",
    messages=messages,
)

Questions

Which should I use, Z.ai: GLM 5.2 or Z.ai: GLM 5.3?

Z.ai: GLM 5.2 has the lower published input-plus-output rate and the lower measured p50 time to first token. Both have 31 Credits provider routes. Their context windows are the same size.

Is Z.ai: GLM 5.2 or Z.ai: GLM 5.3 cheaper?

The current cheapest TrustedRouter route is $2.2999/1M for Z.ai: GLM 5.2 and $3.458818/1M for Z.ai: GLM 5.3. The comparison uses current catalog prices and updates as provider pricing changes.

Is Z.ai: GLM 5.2 or Z.ai: GLM 5.3 faster?

Current measured p50 time to first token is 591 ms for Z.ai: GLM 5.2 and 1085 ms for Z.ai: GLM 5.3. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Z.ai: GLM 5.2 and Z.ai: GLM 5.3 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between z-ai/glm-5.2 and z-ai/glm-5.3. This makes side-by-side evals possible without maintaining two provider integrations.