OpenAI compatible API · Attested · Public status

Google: Gemma 3 27B vs OpenAI: gpt-oss-20b

Google: Gemma 3 27B vs gpt-oss-20b: 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

OpenAI: gpt-oss-20b has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: gpt-oss-20b has more provider fallback routes, while Google: Gemma 3 27B has the larger context window. Current TrustedRouter probes show Google: Gemma 3 27B with the lower p50 TTFT.

$0.2532/1MGoogle: Gemma 3 27B cheapest route

$0.1266/1MOpenAI: gpt-oss-20b cheapest route

938 msGoogle: Gemma 3 27B fastest measured p50 TTFT via nebius

1018 msOpenAI: gpt-oss-20b fastest measured p50 TTFT via io-net

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.

Google: Gemma 3 27BOpenAI: gpt-oss-20b

Model idgoogle/gemma-3-27b-itopenai/gpt-oss-20b

Publisher Google AI Studio OpenAI

AI IQ — IQ 93#113

Context131,072 tokens131,072 tokens

Credits provider routes412

Cheapest route$0.2532/1M$0.1266/1M

Cached input$0.0422/1M$0.0211/1M to $0.033233/1M

Privacy posturehas ZDR routehas ZDR route

Fastest measured p50 TTFT938 ms via nebius1018 ms via io-net

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%75.00% to 100.00%

Modes chat chat

Google: Gemma 3 27B routes

Overview4 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

OpenAI: gpt-oss-20b routes

Overview12 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

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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,
)

Questions

Which should I use, Google: Gemma 3 27B or OpenAI: gpt-oss-20b?

Is Google: Gemma 3 27B or OpenAI: gpt-oss-20b cheaper?

The current cheapest TrustedRouter route is $0.2532/1M for Google: Gemma 3 27B and $0.1266/1M for OpenAI: gpt-oss-20b. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemma 3 27B or OpenAI: gpt-oss-20b faster?

Current measured p50 time to first token is 938 ms for Google: Gemma 3 27B and 1018 ms for OpenAI: gpt-oss-20b. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemma 3 27B and OpenAI: gpt-oss-20b with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between google/gemma-3-27b-it and openai/gpt-oss-20b. This makes side-by-side evals possible without maintaining two provider integrations.