OpenAI compatible API · Attested · Public status

Google: Gemma 4 31B vs OpenAI: gpt-oss-20b

Google: Gemma 4 31B 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. Google: Gemma 4 31B has more provider fallback routes, while Google: Gemma 4 31B has the larger context window. Current TrustedRouter probes show OpenAI: gpt-oss-20b with the lower p50 TTFT.

$0.45365/1MGoogle: Gemma 4 31B cheapest route

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

1163 msGoogle: Gemma 4 31B fastest measured p50 TTFT via friendli

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 4 31BOpenAI: gpt-oss-20b

Model idgoogle/gemma-4-31b-itopenai/gpt-oss-20b

Publisher Google AI Studio OpenAI

AI IQ IQ 103#80 IQ 93#113

Context262,144 tokens131,072 tokens

Credits provider routes1512

Cheapest route$0.45365/1M$0.1266/1M

Cached input$0.03798/1M to $0.211/1M$0.0211/1M to $0.033233/1M

Privacy posturehas provider E2EE routehas ZDR route

Fastest measured p50 TTFT1163 ms via friendli1018 ms via io-net

Highest measured throughput131 tok/s via lightningnot enough data

Recent route uptime range0.00% to 100.00%75.00% to 100.00%

Modes chat chat

Google: Gemma 4 31B routes

Overview15 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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OpenAI: gpt-oss-20b vs Z.ai: GLM 5.240 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Google: Gemma 4 31B39 combined provider routes
Google: Gemma 4 31B vs MoonshotAI: Kimi K339 combined provider routes
OpenAI: gpt-oss-20b vs Z.ai: GLM 5.339 combined provider routes
OpenAI: gpt-oss-20b vs Z.ai: GLM 5.3 Flash38 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="google/gemma-4-31b-it",
    messages=messages,
)

Questions

Which should I use, Google: Gemma 4 31B or OpenAI: gpt-oss-20b?

Is Google: Gemma 4 31B or OpenAI: gpt-oss-20b cheaper?

The current cheapest TrustedRouter route is $0.45365/1M for Google: Gemma 4 31B and $0.1266/1M for OpenAI: gpt-oss-20b. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemma 4 31B or OpenAI: gpt-oss-20b faster?

Current measured p50 time to first token is 1163 ms for Google: Gemma 4 31B 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 4 31B 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-4-31b-it and openai/gpt-oss-20b. This makes side-by-side evals possible without maintaining two provider integrations.