OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V4 Flash 0731 vs DeepSeek: DeepSeek V4.1 Flash

DeepSeek V4 Flash 0731 vs DeepSeek V4.1 Flash: 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 more Credits provider routes. DeepSeek V4.1 Flash has the lower published input-plus-output rate and the lower measured p50 time to first token. Their context windows are the same size.

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

$0.1266/1MDeepSeek: DeepSeek V4.1 Flash cheapest route

1211 msDeepSeek: DeepSeek V4 Flash 0731 fastest measured p50 TTFT via inceptron

940 msDeepSeek: DeepSeek V4.1 Flash fastest measured p50 TTFT via together

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 0731DeepSeek: DeepSeek V4.1 Flash

Model iddeepseek/deepseek-v4-flash-0731deepseek/deepseek-v4.1-flash

Publisher DeepSeek DeepSeek

AI IQ — IQ 127#17

Context1,048,576 tokens1,048,576 tokens

Credits provider routes2721

Cheapest route$0.142425/1M$0.1266/1M

Cached input$0.01/1M to $0.120059/1M$0.01/1M to $0.163631/1M

Privacy posturehas Confidential route (E2EE + ZDR)has Confidential route (E2EE + ZDR)

Fastest measured p50 TTFT1211 ms via inceptron940 ms via together

Highest measured throughputnot enough datanot enough data

Recent route uptime range98.35% to 100.00%99.33% to 100.00%

Modes chat chat decide

DeepSeek: DeepSeek V4 Flash 0731 routes

Overview27 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

DeepSeek: DeepSeek V4.1 Flash routes

Overview21 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Related comparisons

Browse every comparison

DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.3 Flash59 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.258 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.358 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs MoonshotAI: Kimi K355 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.3 Flash53 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.252 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.352 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs OpenAI: gpt-oss-120b50 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="deepseek/deepseek-v4-flash-0731",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V4 Flash 0731 or DeepSeek: DeepSeek V4.1 Flash?

Is DeepSeek: DeepSeek V4 Flash 0731 or DeepSeek: DeepSeek V4.1 Flash cheaper?

The current cheapest TrustedRouter route is $0.142425/1M for DeepSeek: DeepSeek V4 Flash 0731 and $0.1266/1M for DeepSeek: DeepSeek V4.1 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4 Flash 0731 or DeepSeek: DeepSeek V4.1 Flash faster?

Current measured p50 time to first token is 1211 ms for DeepSeek: DeepSeek V4 Flash 0731 and 940 ms for DeepSeek: DeepSeek V4.1 Flash. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V4 Flash 0731 and DeepSeek: DeepSeek V4.1 Flash 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 deepseek/deepseek-v4.1-flash. This makes side-by-side evals possible without maintaining two provider integrations.