OpenAI compatible API · Attested · Public status

Google: Gemini 3.5 Flash Lite vs OpenAI: GPT-4o

Google: Gemini 3.5 Flash Lite vs GPT-4o: 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: Gemini 3.5 Flash Lite has the lower published input-plus-output rate and the larger context window. Both have 2 Credits provider routes. There is not enough recent probe data to compare speed.

$2.954/1MGoogle: Gemini 3.5 Flash Lite cheapest route

$13.1875/1MOpenAI: GPT-4o cheapest route

not enough dataGoogle: Gemini 3.5 Flash Lite fastest measured p50 TTFT

not enough dataOpenAI: GPT-4o fastest measured p50 TTFT

The price comparison adds each route's rate for one million input tokens and one million output tokens; your cost depends on your input/output mix. 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: Gemini 3.5 Flash LiteOpenAI: GPT-4o

Model idgoogle/gemini-3.5-flash-liteopenai/gpt-4o

Publisher Google AI Studio OpenAI

AI IQ IQ 103#92 IQ 87#135

Context1,048,576 tokens128,000 tokens

Credits provider routes22

Cheapest route$2.954/1M$13.1875/1M

Cached input$0.03165/1M$1.31875/1M

Privacy posturehas ZDR routehas ZDR route

Fastest measured p50 TTFTnot enough datanot enough data

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

Google: Gemini 3.5 Flash Lite routes

Overview2 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

OpenAI: GPT-4o routes

Overview2 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

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DeepSeek: DeepSeek V4 Flash 0731 vs Google: Gemini 3.5 Flash Lite26 combined provider routes
OpenAI: GPT-4o vs Qwen: Qwen3.8 27B16 combined provider 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-lite",
    messages=messages,
)

Questions

Which should I use, Google: Gemini 3.5 Flash Lite or OpenAI: GPT-4o?

Is Google: Gemini 3.5 Flash Lite or OpenAI: GPT-4o cheaper?

The current cheapest TrustedRouter route is $2.954/1M for Google: Gemini 3.5 Flash Lite and $13.1875/1M for OpenAI: GPT-4o. The comparison uses current catalog prices and updates as provider pricing changes.

Is Google: Gemini 3.5 Flash Lite or OpenAI: GPT-4o faster?

Current measured p50 time to first token is not enough data for Google: Gemini 3.5 Flash Lite and not enough data for OpenAI: GPT-4o. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Google: Gemini 3.5 Flash Lite and OpenAI: GPT-4o with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between google/gemini-3.5-flash-lite and openai/gpt-4o. This makes side-by-side evals possible without maintaining two provider integrations.