OpenAI compatible API · Attested · Public status

Google: Gemini 3 Flash Preview vs OpenAI: GPT-4o

Compare Google: Gemini 3 Flash Preview and OpenAI: GPT-4o by providers, context, price, and TrustedRouter route support.

Verify gateway
Onebase URL to migrate
100sof models and routes
Noneprompt logs by default
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

Google: Gemini 3 Flash Preview has the lower cheapest prompt+completion route on TrustedRouter. Google: Gemini 3 Flash Preview has more provider fallback routes, while Google: Gemini 3 Flash Preview has the larger context window. Current TrustedRouter probes show OpenAI: GPT-4o with the lower p50 TTFT.

$3.675/1MGoogle: Gemini 3 Flash Preview cheapest route
$13.125/1MOpenAI: GPT-4o cheapest route
2432 msGoogle: Gemini 3 Flash Preview measured p50 TTFT
1841 msOpenAI: GPT-4o measured p50 TTFT
Google: Gemini 3 Flash PreviewOpenAI: GPT-4o
Model idgoogle/gemini-3-flash-previewopenai/gpt-4o
PublisherGoogle AI StudioOpenAI
AI IQ IQ 116#24 IQ #
Context1,048,576 tokens128,000 tokens
Provider routes65
Cheapest route$3.675/1M$13.125/1M
Privacy postureprovider posture variesprovider posture varies
Modes chat chat

Google: Gemini 3 Flash Preview routes

OpenAI: GPT-4o 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/gemini-3-flash-preview",
    messages=messages,
)
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