OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V4 Flash 0731 vs Qwen3.8-27B

DeepSeek V4 Flash 0731 vs Qwen3.8-27B: 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 V4 Flash 0731 has the lower published input-plus-output rate, more Credits provider routes and the larger context window. There is not enough recent probe data to compare speed.

$0.142425/1MDeepSeek: DeepSeek V4 Flash 0731 cheapest route

$3.587/1MQwen3.8-27B cheapest route

1035 msDeepSeek: DeepSeek V4 Flash 0731 fastest measured p50 TTFT via baseten

not enough dataQwen3.8-27B 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.

DeepSeek: DeepSeek V4 Flash 0731Qwen3.8-27B

Model iddeepseek/deepseek-v4-flash-0731lightning-ai/qwen3.8-27b

Publisher DeepSeek Lightning AI

AI IQ — IQ 114#55

Context1,048,576 tokens262,144 tokens

Credits provider routes231

Cheapest route$0.142425/1M$3.587/1M

Cached input$0.01/1M to $0.120059/1MNot published

Privacy posturehas confidential-compute routeprovider posture varies

Fastest measured p50 TTFT1035 ms via basetennot enough data

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%not enough data

Modes chat chat

DeepSeek: DeepSeek V4 Flash 0731 routes

Overview23 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Qwen3.8-27B routes

Overview1 Credits routes

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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-v4-flash-0731",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V4 Flash 0731 or Qwen3.8-27B?

DeepSeek V4 Flash 0731 has the lower published input-plus-output rate, more Credits provider routes and the larger context window. There is not enough recent probe data to compare speed.

Is DeepSeek: DeepSeek V4 Flash 0731 or Qwen3.8-27B cheaper?

The current cheapest TrustedRouter route is $0.142425/1M for DeepSeek: DeepSeek V4 Flash 0731 and $3.587/1M for Qwen3.8-27B. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4 Flash 0731 or Qwen3.8-27B faster?

Current measured p50 time to first token is 1035 ms for DeepSeek: DeepSeek V4 Flash 0731 and not enough data for Qwen3.8-27B. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V4 Flash 0731 and Qwen3.8-27B 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-v4-flash-0731 and lightning-ai/qwen3.8-27b. This makes side-by-side evals possible without maintaining two provider integrations.