OpenAI compatible API · Attested · Public status

Google: Gemini 2.5 Pro vs OpenAI: GPT-5.5

Compare Google: Gemini 2.5 Pro and OpenAI: GPT-5.5 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 2.5 Pro has the lower cheapest prompt+completion route on TrustedRouter. Google: Gemini 2.5 Pro has more provider fallback routes, while OpenAI: GPT-5.5 has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$11.8125/1MGoogle: Gemini 2.5 Pro cheapest route

$36.75/1MOpenAI: GPT-5.5 cheapest route

5447 msGoogle: Gemini 2.5 Pro measured p50 TTFT

not enough dataOpenAI: GPT-5.5 measured p50 TTFT

Google: Gemini 2.5 ProOpenAI: GPT-5.5

Model idgoogle/gemini-2.5-proopenai/gpt-5.5

PublisherGoogle AI StudioOpenAI

AI IQ IQ 104#55 IQ 132#3

Context1,048,576 tokens1,050,000 tokens

Provider routes84

Cheapest route$11.8125/1M$36.75/1M

Privacy postureprovider posture variesprovider posture varies

Modes chat chat

Google: Gemini 2.5 Pro routes

Overview8 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

OpenAI: GPT-5.5 routes

Overview4 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

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-2.5-pro",
    messages=messages,
)