OpenAI compatible API · Attested · Public status

Mistral: Mistral Small 4 vs Z.ai: GLM 5.3

Mistral Small 4 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

Mistral: Mistral Small 4 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.3 has more provider fallback routes, while Z.ai: GLM 5.3 has the larger context window. Current TrustedRouter probes show Mistral: Mistral Small 4 with the lower p50 TTFT.

$0.79125/1MMistral: Mistral Small 4 cheapest route

$4.2833/1MZ.ai: GLM 5.3 cheapest route

954 msMistral: Mistral Small 4 fastest measured p50 TTFT via regolo

1107 msZ.ai: GLM 5.3 fastest measured p50 TTFT via akashml

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.

Mistral: Mistral Small 4Z.ai: GLM 5.3

Model idmistralai/mistral-small-2603z-ai/glm-5.3

Publisher Mistral Z.AI

AI IQ — IQ 123#18

Context262,144 tokens1,048,576 tokens

Credits provider routes227

Cheapest route$0.79125/1M$4.2833/1M

Cached inputNot published$0.1477/1M to $1.02546/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFT954 ms via regolo1107 ms via akashml

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%0.00% to 100.00%

Modes chat chat

Mistral: Mistral Small 4 routes

Overview2 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Z.ai: GLM 5.3 routes

Overview27 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 5.355 combined provider routes
Z.ai: GLM 5.3 vs Z.ai: GLM 5.3 Flash52 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.351 combined provider routes
MoonshotAI: Kimi K3 vs Z.ai: GLM 5.351 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.349 combined provider routes
MoonshotAI: Kimi K2.6 vs Z.ai: GLM 5.347 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs Z.ai: GLM 5.343 combined provider routes
DeepSeek: DeepSeek V4 Pro 0423 vs Z.ai: GLM 5.343 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="mistralai/mistral-small-2603",
    messages=messages,
)

Questions

Which should I use, Mistral: Mistral Small 4 or Z.ai: GLM 5.3?

Is Mistral: Mistral Small 4 or Z.ai: GLM 5.3 cheaper?

The current cheapest TrustedRouter route is $0.79125/1M for Mistral: Mistral Small 4 and $4.2833/1M for Z.ai: GLM 5.3. The comparison uses current catalog prices and updates as provider pricing changes.

Is Mistral: Mistral Small 4 or Z.ai: GLM 5.3 faster?

Current measured p50 time to first token is 954 ms for Mistral: Mistral Small 4 and 1107 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 Mistral: Mistral Small 4 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 mistralai/mistral-small-2603 and z-ai/glm-5.3. This makes side-by-side evals possible without maintaining two provider integrations.