OpenAI compatible API · Attested · Public status
Google: Gemini 3.5 Flash vs OpenAI: GPT-5.6 Terra
Compare Google: Gemini 3.5 Flash and OpenAI: GPT-5.6 Terra by providers, context, price, and TrustedRouter route support.
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 Terra has the larger context window. Current TrustedRouter probes show OpenAI: GPT-5.6 Terra with the lower p50 TTFT.
$11.025/1MGoogle: Gemini 3.5 Flash cheapest route
$18.375/1MOpenAI: GPT-5.6 Terra cheapest route
4623 msGoogle: Gemini 3.5 Flash measured p50 TTFT
1837 msOpenAI: GPT-5.6 Terra measured p50 TTFT
Google: Gemini 3.5 FlashOpenAI: GPT-5.6 Terra
Model id
google/gemini-3.5-flashopenai/gpt-5.6-terra
PublisherGoogle AI StudioOpenAI
Context1,048,576 tokens1,050,000 tokens
Provider routes76
Cheapest route$11.025/1M$18.375/1M
Privacy postureprovider posture variesprovider posture varies
Modes
chat
chat
Google: Gemini 3.5 Flash 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,
)