OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V4 Flash 0423 vs DeepSeek: DeepSeek V4.1 Flash

DeepSeek V4 Flash 0423 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: DeepSeek V4.1 Flash has the lower cheapest prompt+completion route on TrustedRouter. DeepSeek: DeepSeek V4 Flash 0423 has more provider fallback routes, while DeepSeek: DeepSeek V4 Flash 0423 has the larger context window. Current TrustedRouter probes show DeepSeek: DeepSeek V4.1 Flash with the lower p50 TTFT.

$0.24898/1MDeepSeek: DeepSeek V4 Flash 0423 cheapest route

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

953 msDeepSeek: DeepSeek V4 Flash 0423 fastest measured p50 TTFT via parasail

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

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 0423DeepSeek: DeepSeek V4.1 Flash

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

Publisher DeepSeek DeepSeek

AI IQ IQ 116#37 IQ 116#38

Context1,048,576 tokens1,048,576 tokens

Credits provider routes1613

Cheapest route$0.24898/1M$0.1266/1M

Cached input$0.01/1M to $0.182072/1M$0.01/1M to $0.162998/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFT953 ms via parasail898 ms via together

Highest measured throughput80 tok/s via mancernot enough data

Recent route uptime range66.67% to 100.00%99.67% to 100.00%

Modes chat chat

DeepSeek: DeepSeek V4 Flash 0423 routes

Overview16 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

DeepSeek: DeepSeek V4.1 Flash routes

Overview13 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

Related comparisons

Browse every comparison

DeepSeek: DeepSeek V4 Flash 0423 vs Z.ai: GLM 5.244 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs Z.ai: GLM 5.343 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs Z.ai: GLM 5.3 Flash42 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.241 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs DeepSeek: DeepSeek V4 Flash 073140 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs MoonshotAI: Kimi K340 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.340 combined provider routes
DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.3 Flash39 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",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V4 Flash 0423 or DeepSeek: DeepSeek V4.1 Flash?

Is DeepSeek: DeepSeek V4 Flash 0423 or DeepSeek: DeepSeek V4.1 Flash cheaper?

The current cheapest TrustedRouter route is $0.24898/1M for DeepSeek: DeepSeek V4 Flash 0423 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 0423 or DeepSeek: DeepSeek V4.1 Flash faster?

Current measured p50 time to first token is 953 ms for DeepSeek: DeepSeek V4 Flash 0423 and 898 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 0423 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 and deepseek/deepseek-v4.1-flash. This makes side-by-side evals possible without maintaining two provider integrations.