OpenAI compatible API · Attested · Public status

DeepSeek V4 Pro vs OpenAI: gpt-oss-120b

DeepSeek V4 Pro vs gpt-oss-120b: 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 Pro has the larger context window. gpt-oss-120b has the lower published input-plus-output rate and more Credits provider routes. There is not enough recent probe data to compare speed.

$5.53875/1MDeepSeek V4 Pro cheapest route

$0.211/1MOpenAI: gpt-oss-120b cheapest route

not enough dataDeepSeek V4 Pro fastest measured p50 TTFT

963 msOpenAI: gpt-oss-120b 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 V4 ProOpenAI: gpt-oss-120b

Model iddeepseek-ai/DeepSeek-V4-Proopenai/gpt-oss-120b

Publisher Nebius Token Factory OpenAI

AI IQ IQ 114#45 IQ 98#99

Context1,048,576 tokens131,072 tokens

Credits provider routes122

Cheapest route$5.53875/1M$0.211/1M

Cached inputNot published$0.015825/1M to $0.1055/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFTnot enough data963 ms via together

Highest measured throughputnot enough data280 tok/s via fireworks

Recent route uptime rangenot enough data100.00%

Modes chat chat

DeepSeek V4 Pro routes

Overview1 Credits routes

OpenAI: gpt-oss-120b routes

Overview22 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-ai/DeepSeek-V4-Pro",
    messages=messages,
)

Questions

Which should I use, DeepSeek V4 Pro or OpenAI: gpt-oss-120b?

DeepSeek V4 Pro has the larger context window. gpt-oss-120b has the lower published input-plus-output rate and more Credits provider routes. There is not enough recent probe data to compare speed.

Is DeepSeek V4 Pro or OpenAI: gpt-oss-120b cheaper?

The current cheapest TrustedRouter route is $5.53875/1M for DeepSeek V4 Pro and $0.211/1M for OpenAI: gpt-oss-120b. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek V4 Pro or OpenAI: gpt-oss-120b faster?

Current measured p50 time to first token is not enough data for DeepSeek V4 Pro and 963 ms for OpenAI: gpt-oss-120b. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek V4 Pro and OpenAI: gpt-oss-120b with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between deepseek-ai/DeepSeek-V4-Pro and openai/gpt-oss-120b. This makes side-by-side evals possible without maintaining two provider integrations.