Question 1

What is GLM 5?

Accepted Answer

GLM 5 is a model from Z.ai, released on Feb 11, 2026. GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows. Built for expert developers, it delivers production-grade performance on large-scale programming tasks, rivaling leading closed-source models. With advanced agentic planning, deep backend reasoning, and iterative self-correction, GLM-5 moves beyond code generation to full-system construction and autonomous execution.

Question 2

How much does GLM 5 cost?

Accepted Answer

On the Respan gateway, input starts at $0.60 per 1M tokens on OpenRouter, and output starts at $1.92 per 1M tokens on OpenRouter, after gateway discounts. Averaged across 8 providers, it costs $0.92 per 1M input tokens and $2.88 per 1M output tokens.

Question 3

Which providers serve GLM 5 on Respan?

Accepted Answer

8 providers serve GLM 5: OpenRouter, Novita, IO.net, Inference.net, Featherless, Tera, and 2 more. Tera and TogetherAI require your own provider API key (BYOK).

Question 4

What is GLM 5's context window?

Accepted Answer

GLM 5 accepts up to 205K tokens of context on its largest provider route.

Question 5

How do I use GLM 5 with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "zai/glm-5". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is GLM 5?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was IO.net at 41 tokens per second, and the lowest response latency was 1.6 seconds on IO.net. Speed varies with request size and provider.

Question 7

Where does GLM 5 rank on the Respan Index?

Accepted Answer

GLM 5 scores 25.5 out of 100 on the Respan Index v1.1, ranking #78 of 138 models. By category: Coding 10.7, Agents 35.1, Reasoning 16.5, Knowledge & language 23.2 (estimated), and Human preference 51.0. The Respan Index combines independent and lab-reported benchmark results into one score, using benchmark data collected by llmmetric.com.

Question 8

How does GLM 5 score on benchmarks?

Accepted Answer

GLM 5 has 17 published benchmark scores, including SWE-bench Verified 77.8%, tau2-bench Telecom 86.8%, and GPQA Diamond 87.8%. Each score links to where it was published; the data is collected by llmmetric.com.

Provider	Context	Input	Output
OpenRouter`openrouter/z-ai/glm-5`	205K	$0.60/M	$1.92/M
NovitaSave 10%`novita/zai-org/glm-5`	203K	$0.90/M	$2.88/M
IO.net`ionet/zai-org/GLM-5`	203K	$0.92/M	$2.98/M
Inference.net`inference_net/glm-5`	205K	$0.95/M	$2.55/M
Featherless`featherless_ai/zai-org/GLM-5`	203K	$0.95/M	$3.15/M
TeraBYOK only`tera/zai-org/GLM-5`	200K	$1.00/M	$3.20/M
TogetherAIBYOK only`together_ai/zai-org/GLM-5`	203K	$1.00/M	$3.20/M
Z.ai`zai/glm-5`	200K	$1.00/M	$3.20/M

GLM 5

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Response latency

Benchmarks

Respan Indexv1.1

Coding4

Apps

GLM 5 FAQ

Works with your entire stack

Built for AI agents.
Break less.
Ship more.

Agents5

Reasoning3

Math3

Arena2