OpenAI compatible API · Attested · Public status

OpenAI: gpt-oss-120b vs Qwen3.5 Flash 2026 02 23

gpt-oss-120b vs Qwen3.5 Flash 2026 02 23: 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

OpenAI: gpt-oss-120b has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: gpt-oss-120b has more provider fallback routes, while Qwen3.5 Flash 2026 02 23 has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$0.218385/1MOpenAI: gpt-oss-120b cheapest route

$0.5275/1MQwen3.5 Flash 2026 02 23 cheapest route

790 msOpenAI: gpt-oss-120b fastest measured p50 TTFT via baseten

not enough dataQwen3.5 Flash 2026 02 23 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.

OpenAI: gpt-oss-120bQwen3.5 Flash 2026 02 23

Model idopenai/gpt-oss-120bqwen/qwen3.5-flash-2026-02-23

Publisher OpenAI Alibaba Cloud Model Studio

AI IQ IQ 105#63 —

Context131,072 tokens1,048,576 tokens

Provider routes311

Cheapest route$0.218385/1M$0.5275/1M

Privacy posturehas provider E2EE routeprovider posture varies

Fastest measured p50 TTFT790 ms via basetennot enough data

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%not enough data

Modes chat chat

OpenAI: gpt-oss-120b routes

Overview31 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Qwen3.5 Flash 2026 02 23 routes

Overview1 endpoints

Related comparisons

Browse every comparison

OpenAI: gpt-oss-120b vs Z.ai: GLM 5.283 combined provider routes
MoonshotAI: Kimi K3 vs OpenAI: gpt-oss-120b68 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs OpenAI: gpt-oss-120b65 combined provider routes
MoonshotAI: Kimi K2.6 vs OpenAI: gpt-oss-120b62 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: gpt-oss-120b60 combined provider routes
DeepSeek: DeepSeek V4 Pro 0423 vs OpenAI: gpt-oss-120b59 combined provider routes
Google: Gemma 4 31B vs OpenAI: gpt-oss-120b58 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.154 combined provider routes

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="openai/gpt-oss-120b",
    messages=messages,
)

Questions

Which should I use, OpenAI: gpt-oss-120b or Qwen3.5 Flash 2026 02 23?

Is OpenAI: gpt-oss-120b or Qwen3.5 Flash 2026 02 23 cheaper?

The current cheapest TrustedRouter route is $0.218385/1M for OpenAI: gpt-oss-120b and $0.5275/1M for Qwen3.5 Flash 2026 02 23. The comparison uses current catalog prices and updates as provider pricing changes.

Is OpenAI: gpt-oss-120b or Qwen3.5 Flash 2026 02 23 faster?

Current measured p50 time to first token is 790 ms for OpenAI: gpt-oss-120b and not enough data for Qwen3.5 Flash 2026 02 23. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test OpenAI: gpt-oss-120b and Qwen3.5 Flash 2026 02 23 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between openai/gpt-oss-120b and qwen/qwen3.5-flash-2026-02-23. This makes side-by-side evals possible without maintaining two provider integrations.