name = "GLM-5.1"
description = "Flagship GLM model for hybrid reasoning, coding, and agentic engineering"
family = "glm"
release_date = "2026-04-07"
last_updated = "2026-04-07"
attachment = false
reasoning = true
reasoning_options = [{ type = "toggle" }]
temperature = true
tool_call = true
knowledge = "2025-04"
open_weights = true

[interleaved]
field = "reasoning_content"

[cost]
input = 1.4
output = 4.4
cache_read = 0.26

[limit]
context = 204_800
output = 131_072

[modalities]
input = ["text"]
output = ["text"]