OpenAI compatible API. Attested gateway. Public status.

OpenAI: gpt-oss-120b vs Z.AI GLM 5.2

Compare OpenAI: gpt-oss-120b and Z.AI GLM 5.2 by providers, context, price, and TrustedRouter route support.

Verify gateway

1 URLbase_url migration

100smodels and routes

0prompt logs by default

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

OpenAI: gpt-oss-120b has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: gpt-oss-120b has more provider fallback routes, while Z.AI GLM 5.2 has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$0.33/1MOpenAI: gpt-oss-120b cheapest route

$6.38/1MZ.AI GLM 5.2 cheapest route

639 msOpenAI: gpt-oss-120b measured p50 TTFT

not enough dataZ.AI GLM 5.2 measured p50 TTFT

OpenAI: gpt-oss-120bZ.AI GLM 5.2

Model idopenai/gpt-oss-120bz-ai/glm-5.2

PublisherOpenAIZ.AI

Context131,072 tokens1,000,000 tokens

Provider routes132

Cheapest route$0.33/1M$6.38/1M

Privacy posturehas provider E2EE routeprovider posture varies

Modes chat chat

OpenAI: gpt-oss-120b routes

Overview13 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Z.AI GLM 5.2 routes

Overview2 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

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="openai/gpt-oss-120b",
    messages=messages,
)