OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: gpt-oss-120b

DeepSeek V4 Flash 0423 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 Flash 0423 has the larger context window. gpt-oss-120b has the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token.

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

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

1179 msDeepSeek: DeepSeek V4 Flash 0423 fastest measured p50 TTFT via morph

830 msOpenAI: gpt-oss-120b fastest measured p50 TTFT via fireworks

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 0423OpenAI: gpt-oss-120b

Model iddeepseek/deepseek-v4-flashopenai/gpt-oss-120b

Publisher DeepSeek OpenAI

AI IQ IQ 122#33 IQ 99#120

Context1,048,576 tokens131,072 tokens

Credits provider routes1423

Cheapest route$0.24898/1M$0.211/1M

Cached input$0.01/1M to $0.07385/1M$0.015825/1M to $0.1055/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFT1179 ms via morph830 ms via fireworks

Highest measured throughput282 tok/s via crusoenot enough data

Recent route uptime range100.00%0.00% to 100.00%

Modes chat chat

DeepSeek: DeepSeek V4 Flash 0423 routes

Overview14 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

OpenAI: gpt-oss-120b routes

Overview23 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-flash",
    messages=messages,
)

Questions

Which should I use, DeepSeek: DeepSeek V4 Flash 0423 or OpenAI: gpt-oss-120b?

DeepSeek V4 Flash 0423 has the larger context window. gpt-oss-120b has the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token.

Is DeepSeek: DeepSeek V4 Flash 0423 or OpenAI: gpt-oss-120b cheaper?

The current cheapest TrustedRouter route is $0.24898/1M for DeepSeek: DeepSeek V4 Flash 0423 and $0.211/1M for OpenAI: gpt-oss-120b. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4 Flash 0423 or OpenAI: gpt-oss-120b faster?

Current measured p50 time to first token is 1179 ms for DeepSeek: DeepSeek V4 Flash 0423 and 830 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: DeepSeek V4 Flash 0423 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/deepseek-v4-flash and openai/gpt-oss-120b. This makes side-by-side evals possible without maintaining two provider integrations.