OpenAI compatible API · Attested · Public status

Google: Gemini 3.5 Flash vs OpenAI: GPT-5.6 Sol

Compare Google: Gemini 3.5 Flash and OpenAI: GPT-5.6 Sol 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 3.5 Flash has the lower cheapest prompt+completion route on TrustedRouter. Google: Gemini 3.5 Flash has more provider fallback routes, while OpenAI: GPT-5.6 Sol has the larger context window. Current TrustedRouter probes show OpenAI: GPT-5.6 Sol with the lower p50 TTFT.

$11.025/1MGoogle: Gemini 3.5 Flash cheapest route
$36.75/1MOpenAI: GPT-5.6 Sol cheapest route
4623 msGoogle: Gemini 3.5 Flash measured p50 TTFT
1116 msOpenAI: GPT-5.6 Sol measured p50 TTFT
Google: Gemini 3.5 FlashOpenAI: GPT-5.6 Sol
Model idgoogle/gemini-3.5-flashopenai/gpt-5.6-sol
PublisherGoogle AI StudioOpenAI
Context1,048,576 tokens1,050,000 tokens
Provider routes74
Cheapest route$11.025/1M$36.75/1M
Privacy postureprovider posture variesprovider posture varies
Modes chat chat

Google: Gemini 3.5 Flash routes

OpenAI: GPT-5.6 Sol 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-3.5-flash",
    messages=messages,
)
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