OpenAI compatible API · Attested · Public status

DeepSeek: DeepSeek V4 Flash vs Qwen: Qwen3.5-9B

Compare DeepSeek: DeepSeek V4 Flash and Qwen: Qwen3.5-9B by providers, context, price, and TrustedRouter route support.

Verify gateway

Onebase URL to migrate

100sof models and routes

Noneprompt logs by default

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

Qwen: Qwen3.5-9B has the lower cheapest prompt+completion route on TrustedRouter. DeepSeek: DeepSeek V4 Flash has more provider fallback routes, while DeepSeek: DeepSeek V4 Flash has the larger context window. Current TrustedRouter probes show DeepSeek: DeepSeek V4 Flash with the lower p50 TTFT.

$0.2835/1MDeepSeek: DeepSeek V4 Flash cheapest route

$0.2625/1MQwen: Qwen3.5-9B cheapest route

1153 msDeepSeek: DeepSeek V4 Flash measured p50 TTFT

3645 msQwen: Qwen3.5-9B measured p50 TTFT

DeepSeek: DeepSeek V4 FlashQwen: Qwen3.5-9B

Model iddeepseek/deepseek-v4-flashqwen/qwen3.5-9b

PublisherDeepSeekDeepInfra

AI IQ IQ 109#42 IQ 93#88

Context1,048,576 tokens262,144 tokens

Provider routes198

Cheapest route$0.2835/1M$0.2625/1M

Privacy posturehas ZDR routehas provider E2EE route

Modes chat chat

DeepSeek: DeepSeek V4 Flash routes

Overview19 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Qwen: Qwen3.5-9B routes

Overview8 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

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,
)