OpenAI compatible API · Attested · Public status

Google: Gemma 4 31B vs solar-pro2

Google: Gemma 4 31B vs solar-pro2: 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

Google: Gemma 4 31B 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 Google: Gemma 4 31B with the lower p50 TTFT.

$0.4642/1MGoogle: Gemma 4 31B cheapest route

$0.79125/1Msolar-pro2 cheapest route

979 msGoogle: Gemma 4 31B fastest measured p50 TTFT via tinfoil

2096 mssolar-pro2 fastest measured p50 TTFT via upstage

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 31Bsolar-pro2

Model idgoogle/gemma-4-31b-itupstage/solar-pro2

Publisher Google AI Studio Upstage

AI IQ IQ 103#80 —

Context262,144 tokens0 tokens

Credits provider routes141

Cheapest route$0.4642/1M$0.79125/1M

Cached input$0.03798/1M to $0.211/1M$0.015825/1M

Privacy posturehas provider E2EE routeprovider posture varies

Fastest measured p50 TTFT979 ms via tinfoil2096 ms via upstage

Highest measured throughputnot enough datanot enough data

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

Modes chat chat

Google: Gemma 4 31B routes

Overview14 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

solar-pro2 routes

Overview1 Credits routes

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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-4-31b-it",
    messages=messages,
)

Questions

Which should I use, Google: Gemma 4 31B or solar-pro2?

Is Google: Gemma 4 31B or solar-pro2 cheaper?

The current cheapest TrustedRouter route is $0.4642/1M for Google: Gemma 4 31B and $0.79125/1M for solar-pro2. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemma 4 31B or solar-pro2 faster?

Current measured p50 time to first token is 979 ms for Google: Gemma 4 31B and 2096 ms for solar-pro2. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemma 4 31B and solar-pro2 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 upstage/solar-pro2. This makes side-by-side evals possible without maintaining two provider integrations.