OpenAI compatible API · Attested · Public status

DeepSeek V3 0324 vs OpenAI: GPT-5.5

DeepSeek V3 0324 vs GPT-5.5: 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 V3 0324 has the lower cheapest prompt+completion route on TrustedRouter. DeepSeek V3 0324 has more provider fallback routes, while OpenAI: GPT-5.5 has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$1.2027/1MDeepSeek V3 0324 cheapest route

$36.925/1MOpenAI: GPT-5.5 cheapest route

not enough dataDeepSeek V3 0324 fastest measured p50 TTFT

not enough dataOpenAI: GPT-5.5 fastest measured p50 TTFT

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 V3 0324OpenAI: GPT-5.5

Model iddeepseek/deepseek-v3-0324openai/gpt-5.5

Publisher DeepSeek OpenAI

AI IQ — IQ 133#6

Context163,840 tokens1,050,000 tokens

Credits provider routes32

Cheapest route$1.2027/1M$36.925/1M

Cached input$0.142425/1M to $0.26375/1M$0.5275/1M to $1.055/1M

Privacy postureprovider posture varieshas ZDR route

Fastest measured p50 TTFTnot enough datanot enough data

Highest measured throughputnot enough datanot enough data

Recent route uptime rangenot enough data100.00%

Modes chat chat

DeepSeek V3 0324 routes

Overview3 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

OpenAI: GPT-5.5 routes

Overview2 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
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-v3-0324",
    messages=messages,
)

Questions

Which should I use, DeepSeek V3 0324 or OpenAI: GPT-5.5?

Is DeepSeek V3 0324 or OpenAI: GPT-5.5 cheaper?

The current cheapest TrustedRouter route is $1.2027/1M for DeepSeek V3 0324 and $36.925/1M for OpenAI: GPT-5.5. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek V3 0324 or OpenAI: GPT-5.5 faster?

Current measured p50 time to first token is not enough data for DeepSeek V3 0324 and not enough data for OpenAI: GPT-5.5. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek V3 0324 and OpenAI: GPT-5.5 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-v3-0324 and openai/gpt-5.5. This makes side-by-side evals possible without maintaining two provider integrations.