OpenAI compatible API · Attested · Public status

OpenAI: gpt-oss-120b vs Google: Gemma 4 31B

Compare OpenAI: gpt-oss-120b and Google: Gemma 4 31B 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 4 31B has the larger context window. Current TrustedRouter probes show OpenAI: gpt-oss-120b with the lower p50 TTFT.

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

$0.5355/1MGoogle: Gemma 4 31B cheapest route

1728 msOpenAI: gpt-oss-120b measured p50 TTFT

2924 msGoogle: Gemma 4 31B measured p50 TTFT

OpenAI: gpt-oss-120bGoogle: Gemma 4 31B

Model idopenai/gpt-oss-120bgoogle/gemma-4-31b-it

PublisherOpenAIGoogle AI Studio

AI IQ IQ 105#52 IQ 101#65

Context131,072 tokens262,144 tokens

Provider routes2323

Cheapest route$0.21735/1M$0.5355/1M

Privacy posturehas provider E2EE routehas provider E2EE route

Modes chat chat

OpenAI: gpt-oss-120b routes

Overview23 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Google: Gemma 4 31B routes

Overview23 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="openai/gpt-oss-120b",
    messages=messages,
)