OpenAI compatible API · Attested · Public status

OpenAI GPT OSS vs DeepSeek: DeepSeek V4.1 Flash

OpenAI GPT OSS 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 V4.1 Flash has more provider fallback routes, while DeepSeek: DeepSeek V4.1 Flash has the larger context window. Current TrustedRouter probes show OpenAI GPT OSS with the lower p50 TTFT.

$1.1605/1MOpenAI GPT OSS cheapest route

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

1311 msOpenAI GPT OSS fastest measured p50 TTFT via cerebras

1489 msDeepSeek: DeepSeek V4.1 Flash fastest measured p50 TTFT via makora

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.

OpenAI GPT OSSDeepSeek: DeepSeek V4.1 Flash

Model idcerebras/gpt-oss-120bdeepseek/deepseek-v4.1-flash

Publisher Cerebras DeepSeek

AI IQ IQ 98#99 IQ 116#38

Context131,072 tokens1,048,576 tokens

Credits provider routes114

Cheapest route$1.1605/1M$0.1266/1M

Cached inputNot published$0.01/1M to $0.162998/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFT1311 ms via cerebras1489 ms via makora

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%85.04% to 100.00%

Modes chat chat

OpenAI GPT OSS routes

Overview1 Credits routes

DeepSeek: DeepSeek V4.1 Flash routes

Overview14 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="cerebras/gpt-oss-120b",
    messages=messages,
)

Questions

Which should I use, OpenAI GPT OSS or DeepSeek: DeepSeek V4.1 Flash?

Is OpenAI GPT OSS or DeepSeek: DeepSeek V4.1 Flash cheaper?

The current cheapest TrustedRouter route is $1.1605/1M for OpenAI GPT OSS and $0.1266/1M for DeepSeek: DeepSeek V4.1 Flash. The comparison uses current catalog prices and updates as provider pricing changes.

Is OpenAI GPT OSS or DeepSeek: DeepSeek V4.1 Flash faster?

Current measured p50 time to first token is 1311 ms for OpenAI GPT OSS and 1489 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 OpenAI GPT OSS 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 cerebras/gpt-oss-120b and deepseek/deepseek-v4.1-flash. This makes side-by-side evals possible without maintaining two provider integrations.