OpenAI compatible API · Attested · Public status

OpenAI: GPT-5.6 Terra vs GLM 5.2 Fast on Fireworks

Compare OpenAI: GPT-5.6 Terra and GLM 5.2 Fast on Fireworks 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

GLM 5.2 Fast on Fireworks 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. Current TrustedRouter probes show OpenAI: GPT-5.6 Terra with the lower p50 TTFT.

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

$12.18/1MGLM 5.2 Fast on Fireworks cheapest route

1837 msOpenAI: GPT-5.6 Terra measured p50 TTFT

3316 msGLM 5.2 Fast on Fireworks measured p50 TTFT

OpenAI: GPT-5.6 TerraGLM 5.2 Fast on Fireworks

Model idopenai/gpt-5.6-terraz-ai/glm-5.2-fast

PublisherOpenAIZ.AI

AI IQ IQ 131#4 —

Context1,050,000 tokens1,048,576 tokens

Provider routes64

Cheapest route$18.375/1M$12.18/1M

Privacy postureprovider posture variesprovider posture varies

Modes chat chat

OpenAI: GPT-5.6 Terra routes

Overview6 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

GLM 5.2 Fast on Fireworks 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="openai/gpt-5.6-terra",
    messages=messages,
)