GLM 5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on…
Full description at the source- Input price
- per 1M tokens
- Output price
- per 1M tokens
- Context
- 200K128K max output
- Cost / request
- 8K in · 500 out
- Writing Elo
- 1589EQ-Bench creative writing
01Routes and pricing
02Capabilities
- Input
- text
- Output
- text
- Context
- 200K
- Max output
- 128K
ReasoningTool callingStructured outputJSON modeLogprobs
03Benchmarks
Creative writing
1589.2 EloEQ-Bench Creative Writing v3EQ-Bench Creative Writing v304Quick start
Call it with your RProuter key
Any OpenAI-compatible SDK works. Point it at the RProuter base URL from your API keys page and use this model ID.
Catalog source: openrouter.ai · checked 2026-09-16
const response = await client.chat.completions.create({
model: "z-ai/glm-5.1",
messages: [{ role: "user", content: "A story begins…" }],
max_tokens: 500,
stream: true,
});
for await (const chunk of response) {
process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}