OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V3.1 Terminus vs Google: Gemini 3 Flash Preview

DeepSeek V3.1 Terminus vs Google: Gemini 3 Flash Preview: 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

DeepSeek: DeepSeek V3.1 Terminus 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. Probe-backed speed data is shown when enough recent samples exist.

$1.31875/1MDeepSeek: DeepSeek V3.1 Terminus cheapest route

$3.6925/1MGoogle: Gemini 3 Flash Preview cheapest route

not enough dataDeepSeek: DeepSeek V3.1 Terminus fastest measured p50 TTFT

1725 msGoogle: Gemini 3 Flash Preview fastest measured p50 TTFT via google-vertex

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.

DeepSeek: DeepSeek V3.1 TerminusGoogle: Gemini 3 Flash Preview

Model iddeepseek/deepseek-v3.1-terminusgoogle/gemini-3-flash-preview

Publisher DeepSeek Google AI Studio

AI IQ — IQ 116#37

Context131,072 tokens1,048,576 tokens

Credits provider routes34

Cheapest route$1.31875/1M$3.6925/1M

Cached input$0.13715/1M to $0.142425/1M$0.05275/1M

Privacy postureprovider posture varieshas ZDR route

Fastest measured p50 TTFTnot enough data1725 ms via google-vertex

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

DeepSeek: DeepSeek V3.1 Terminus routes

Overview3 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Google: Gemini 3 Flash Preview routes

Overview4 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

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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="deepseek/deepseek-v3.1-terminus",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V3.1 Terminus or Google: Gemini 3 Flash Preview?

Is DeepSeek: DeepSeek V3.1 Terminus or Google: Gemini 3 Flash Preview cheaper?

The current cheapest TrustedRouter route is $1.31875/1M for DeepSeek: DeepSeek V3.1 Terminus and $3.6925/1M for Google: Gemini 3 Flash Preview. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V3.1 Terminus or Google: Gemini 3 Flash Preview faster?

Current measured p50 time to first token is not enough data for DeepSeek: DeepSeek V3.1 Terminus and 1725 ms for Google: Gemini 3 Flash Preview. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V3.1 Terminus and Google: Gemini 3 Flash Preview with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between deepseek/deepseek-v3.1-terminus and google/gemini-3-flash-preview. This makes side-by-side evals possible without maintaining two provider integrations.