OpenAI compatible API · Attested · Public status

Claude Opus 5 vs OpenAI: GPT-5 Nano

Compare Claude Opus 5 and OpenAI: GPT-5 Nano by providers, context, price, and TrustedRouter route support.

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

OpenAI: GPT-5 Nano has the lower cheapest prompt+completion route on TrustedRouter. Claude Opus 5 has more provider fallback routes, while Claude Opus 5 has the larger context window. Current TrustedRouter probes show Claude Opus 5 with the lower p50 TTFT.

$31.5/1MClaude Opus 5 cheapest route

$0.4725/1MOpenAI: GPT-5 Nano cheapest route

3238 msClaude Opus 5 measured p50 TTFT

4117 msOpenAI: GPT-5 Nano measured p50 TTFT

Claude Opus 5OpenAI: GPT-5 Nano

Model idanthropic/claude-opus-5openai/gpt-5-nano

PublisherAnthropicOpenAI

AI IQ IQ 134#3 IQ 96#80

Context1,000,000 tokens400,000 tokens

Provider routes54

Cheapest route$31.5/1M$0.4725/1M

Privacy postureprovider posture varieshas ZDR route

Modes chat messages chat

Claude Opus 5 routes

Overview5 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

OpenAI: GPT-5 Nano routes

Overview4 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="anthropic/claude-opus-5",
    messages=messages,
)