OpenAI compatible API · Attested · Public status

Ternary Bonsai 27B vs Z.ai: GLM 5.1

Ternary Bonsai 27B vs Z.ai: GLM 5.1: 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

Ternary Bonsai 27B has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 5.1 has more provider fallback routes, while Ternary Bonsai 27B has the larger context window. Current TrustedRouter probes show Z.ai: GLM 5.1 with the lower p50 TTFT.

$0.02/1MTernary Bonsai 27B cheapest route

$4.2833/1MZ.ai: GLM 5.1 cheapest route

1711 msTernary Bonsai 27B fastest measured p50 TTFT via together

1081 msZ.ai: GLM 5.1 fastest measured p50 TTFT via digitalocean

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.

Ternary Bonsai 27BZ.ai: GLM 5.1

Model idprism-ml/ternary-bonsai-27bz-ai/glm-5.1

Publisher Together Z.AI

AI IQ — IQ 114#39

Context262,144 tokens204,800 tokens

Provider routes224

Cheapest route$0.02/1M$4.2833/1M

Privacy posturehas ZDR routehas provider E2EE route

Fastest measured p50 TTFT1711 ms via together1081 ms via digitalocean

Highest measured throughputnot enough datanot enough data

Recent route uptime range100.00%100.00%

Modes chat chat

Ternary Bonsai 27B routes

Overview2 endpoints
PricingPrompt and completion rates
ProvidersAll serving providers

Z.ai: GLM 5.1 routes

Overview24 endpoints
PricingPrompt and completion rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

Related comparisons

Browse every comparison

Z.ai: GLM 5.1 vs Z.ai: GLM 5.278 combined provider routes
MoonshotAI: Kimi K3 vs Z.ai: GLM 5.161 combined provider routes
DeepSeek: DeepSeek V4 Flash 0731 vs Z.ai: GLM 5.159 combined provider routes
OpenAI: gpt-oss-120b vs Z.ai: GLM 5.159 combined provider routes
MoonshotAI: Kimi K2.6 vs Z.ai: GLM 5.156 combined provider routes
DeepSeek: DeepSeek V4 Flash 0423 vs Z.ai: GLM 5.155 combined provider routes
DeepSeek: DeepSeek V4 Pro 0423 vs Z.ai: GLM 5.153 combined provider routes
Google: Gemma 4 31B vs Z.ai: GLM 5.153 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="prism-ml/ternary-bonsai-27b",
    messages=messages,
)

Questions

Which should I use, Ternary Bonsai 27B or Z.ai: GLM 5.1?

Is Ternary Bonsai 27B or Z.ai: GLM 5.1 cheaper?

The current cheapest TrustedRouter route is $0.02/1M for Ternary Bonsai 27B and $4.2833/1M for Z.ai: GLM 5.1. The comparison uses current catalog prices and updates as provider pricing changes.

Is Ternary Bonsai 27B or Z.ai: GLM 5.1 faster?

Current measured p50 time to first token is 1711 ms for Ternary Bonsai 27B and 1081 ms for Z.ai: GLM 5.1. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Ternary Bonsai 27B and Z.ai: GLM 5.1 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between prism-ml/ternary-bonsai-27b and z-ai/glm-5.1. This makes side-by-side evals possible without maintaining two provider integrations.