OpenAI compatible API · Attested · Public status

Claude Opus 5 vs OpenAI: GPT-5.6 Terra

Compare Claude Opus 5 and OpenAI: GPT-5.6 Terra 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-5.6 Terra has the lower cheapest prompt+completion route on TrustedRouter. OpenAI: GPT-5.6 Terra has more provider fallback routes, while OpenAI: GPT-5.6 Terra has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$31.5/1MClaude Opus 5 cheapest route

$18.375/1MOpenAI: GPT-5.6 Terra cheapest route

not enough dataClaude Opus 5 measured p50 TTFT

not enough dataOpenAI: GPT-5.6 Terra measured p50 TTFT

Claude Opus 5OpenAI: GPT-5.6 Terra

Model idanthropic/claude-opus-5openai/gpt-5.6-terra

PublisherAnthropicOpenAI

AI IQ IQ 134#3 IQ 132#5

Context1,000,000 tokens1,050,000 tokens

Provider routes56

Cheapest route$31.5/1M$18.375/1M

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-5.6 Terra routes

Overview6 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,
)