OpenAI compatible API · Attested · Public status

Claude Opus 5 vs OpenAI: GPT-4o

Compare Claude Opus 5 and OpenAI: GPT-4o 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-4o 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. Probe-backed speed data is shown when enough recent samples exist.

$31.5/1MClaude Opus 5 cheapest route

$13.125/1MOpenAI: GPT-4o cheapest route

not enough dataClaude Opus 5 measured p50 TTFT

not enough dataOpenAI: GPT-4o measured p50 TTFT

Claude Opus 5OpenAI: GPT-4o

Model idanthropic/claude-opus-5openai/gpt-4o

PublisherAnthropicOpenAI

AI IQ IQ 134#3 IQ #

Context1,000,000 tokens128,000 tokens

Provider routes55

Cheapest route$31.5/1M$13.125/1M

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-4o routes

Overview5 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://gchircrcif.eu-west-3.awsapprunner.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="anthropic/claude-opus-5",
    messages=messages,
)