Free to start

Cloudflare Clef-Flash vs Z.ai: GLM 5.3 Flash

Try both on us. Starter credit covers your first requests, then one key routes Cloudflare Clef-Flash and GLM 5.3 Flash. Switch by changing the model name.

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

Cloudflare Clef-Flash has the lower published input-plus-output rate. Z.ai: GLM 5.3 Flash has more Credits provider routes and the larger context window. There is not enough recent probe data to compare speed.

$0.176797/1MCloudflare Clef-Flash cheapest route

$0.26375/1MZ.ai: GLM 5.3 Flash cheapest route

not enough dataCloudflare Clef-Flash fastest measured p50 TTFT

632 msZ.ai: GLM 5.3 Flash fastest measured p50 TTFT via privatemode

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.

Cloudflare Clef-FlashZ.ai: GLM 5.3 Flash

Model idcloudflare/clef-flashz-ai/glm-5.3-flash

Publishercloudflare Z.AI

AI IQ — IQ 119#50

Context65,536 tokens1,048,576 tokens

Credits provider routes132

Cheapest route$0.176797/1M$0.26375/1M

Cached inputNot published$0.015825/1M to $0.079125/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFTnot enough data632 ms via privatemode

Highest measured throughputnot enough datanot enough data

Recent route uptime rangenot enough data100.00%

Modes decide chat

Cloudflare Clef-Flash routes

Overview1 Credits routes

Z.ai: GLM 5.3 Flash routes

Overview32 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 Flash65 combined provider routes
Z.ai: GLM 5.3 vs Z.ai: GLM 5.3 Flash65 combined provider routes
MoonshotAI: Kimi K3 vs Z.ai: GLM 5.3 Flash60 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.3 Flash58 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.3 Flash56 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.3 Flash55 combined provider routes
Qwen: Qwen3.8 27B vs Z.ai: GLM 5.3 Flash54 combined provider routes
MoonshotAI: Kimi K2.6 vs Z.ai: GLM 5.3 Flash49 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.

POST /api/alpha/decidecurl

curl https://api.trustedrouter.com/api/alpha/decide \
  -H "Authorization: Bearer sk-tr-v1-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "cloudflare/clef-flash",
    "state": "Customer: I was charged twice for order A-1.",
    "questions": {
      "refund": {"type": "boolean", "instructions": "Is a refund requested?"}
    }
  }'

Decision models: the API, the models, the numbers

Questions

Which should I use, Cloudflare Clef-Flash or Z.ai: GLM 5.3 Flash?

Is Cloudflare Clef-Flash or Z.ai: GLM 5.3 Flash cheaper?

The current cheapest TrustedRouter route is $0.176797/1M for Cloudflare Clef-Flash and $0.26375/1M for Z.ai: GLM 5.3 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is Cloudflare Clef-Flash or Z.ai: GLM 5.3 Flash faster?

Current measured p50 time to first token is not enough data for Cloudflare Clef-Flash and 632 ms for Z.ai: GLM 5.3 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Cloudflare Clef-Flash and Z.ai: GLM 5.3 Flash with the same API?

Yes. Both take the same request on POST /api/alpha/decide, with the same TrustedRouter base URL and API key, so a side-by-side eval changes only the model id between cloudflare/clef-flash and z-ai/glm-5.3-flash. Cloudflare Clef-Flash does not take chat requests.