OpenAI compatible API. Attested gateway. Public status.

DeepSeek: DeepSeek V4 Flash vs DeepSeek: DeepSeek V3.1

Compare DeepSeek: DeepSeek V4 Flash and DeepSeek: DeepSeek V3.1 by providers, context, price, and TrustedRouter route support.

Verify gateway
1 URLbase_url migration
100smodels and routes
0prompt 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

DeepSeek: DeepSeek V4 Flash has the lower cheapest prompt+completion route on TrustedRouter. DeepSeek: DeepSeek V4 Flash has more provider fallback routes, while DeepSeek: DeepSeek V4 Flash has the larger context window. Current TrustedRouter probes show DeepSeek: DeepSeek V4 Flash with the lower p50 TTFT.

$0.297/1MDeepSeek: DeepSeek V4 Flash cheapest route
$4.565/1MDeepSeek: DeepSeek V3.1 cheapest route
1189 msDeepSeek: DeepSeek V4 Flash measured p50 TTFT
10416 msDeepSeek: DeepSeek V3.1 measured p50 TTFT
DeepSeek: DeepSeek V4 FlashDeepSeek: DeepSeek V3.1
Model iddeepseek/deepseek-v4-flashdeepseek/deepseek-chat-v3.1
PublisherDeepSeekDeepSeek
AI IQ IQ 105#43 —
Context1,048,576 tokens163,840 tokens
Provider routes143
Cheapest route$0.297/1M$4.565/1M
Privacy postureprovider posture varieshas provider E2EE route
Modes chat chat

DeepSeek: DeepSeek V4 Flash routes

DeepSeek: DeepSeek V3.1 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="deepseek/deepseek-v4-flash",
    messages=messages,
)

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