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DeepSeek: DeepSeek V4.1 Flash vs OpenAI: gpt-oss-20b

Try both on us. Starter credit covers your first requests, then one key routes DeepSeek V4.1 Flash and gpt-oss-20b. Switch by changing the model name.

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 V4.1 Flash has more Credits provider routes, the larger context window and the lower measured p50 time to first token. gpt-oss-20b has the lower published input-plus-output rate.

$0.15825/1MDeepSeek: DeepSeek V4.1 Flash cheapest route

$0.057475/1MOpenAI: gpt-oss-20b cheapest route

1010 msDeepSeek: DeepSeek V4.1 Flash fastest measured p50 TTFT via crusoe

1011 msOpenAI: gpt-oss-20b fastest measured p50 TTFT via akashml

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 V4.1 FlashOpenAI: gpt-oss-20b

Model iddeepseek/deepseek-v4.1-flashopenai/gpt-oss-20b

Publisher DeepSeek OpenAI

AI IQ IQ 126#24 IQ 93#155

Context1,048,576 tokens131,072 tokens

Credits provider routes2412

Cheapest route$0.15825/1M$0.057475/1M

Cached input$0.01/1M to $0.174075/1M$0.01/1M to $0.027958/1M

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

Fastest measured p50 TTFT1010 ms via crusoe1011 ms via akashml

Highest measured throughputnot enough datanot enough data

Recent route uptime range0.00% to 100.00%0.00% to 100.00%

Modes chat decide chat decide

DeepSeek: DeepSeek V4.1 Flash routes

Overview24 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

OpenAI: gpt-oss-20b routes

Overview12 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-v4.1-flash",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V4.1 Flash or OpenAI: gpt-oss-20b?

DeepSeek V4.1 Flash has more Credits provider routes, the larger context window and the lower measured p50 time to first token. gpt-oss-20b has the lower published input-plus-output rate.

Is DeepSeek: DeepSeek V4.1 Flash or OpenAI: gpt-oss-20b cheaper?

The current cheapest TrustedRouter route is $0.15825/1M for DeepSeek: DeepSeek V4.1 Flash and $0.057475/1M for OpenAI: gpt-oss-20b. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4.1 Flash or OpenAI: gpt-oss-20b faster?

Current measured p50 time to first token is 1010 ms for DeepSeek: DeepSeek V4.1 Flash and 1011 ms for OpenAI: gpt-oss-20b. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V4.1 Flash and OpenAI: gpt-oss-20b 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-v4.1-flash and openai/gpt-oss-20b. This makes side-by-side evals possible without maintaining two provider integrations.