OpenAI compatible API · Attested · Public status

Google: Gemma 3 27B vs OpenAI: gpt-oss-120b

Compare Google: Gemma 3 27B and OpenAI: gpt-oss-120b by providers, context, price, and TrustedRouter route support.

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

OpenAI: gpt-oss-120b has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: gpt-oss-120b has more provider fallback routes, while Google: Gemma 3 27B has the larger context window. Current TrustedRouter probes show OpenAI: gpt-oss-120b with the lower p50 TTFT.

$0.252/1MGoogle: Gemma 3 27B cheapest route

$0.21735/1MOpenAI: gpt-oss-120b cheapest route

2098 msGoogle: Gemma 3 27B measured p50 TTFT

1525 msOpenAI: gpt-oss-120b measured p50 TTFT

Google: Gemma 3 27BOpenAI: gpt-oss-120b

Model idgoogle/gemma-3-27b-itopenai/gpt-oss-120b

PublisherGoogle AI StudioOpenAI

AI IQ — IQ 105#52

Context262,144 tokens131,072 tokens

Provider routes824

Cheapest route$0.252/1M$0.21735/1M

Privacy posturehas ZDR routehas provider E2EE route

Modes chat chat

Google: Gemma 3 27B routes

Overview8 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

OpenAI: gpt-oss-120b routes

Overview24 endpoints
PricingPrompt and completion rates
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="google/gemma-3-27b-it",
    messages=messages,
)