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GLM 5.2

GLM 5.2 is a Z.ai model with 1M context, $1.40 in / $4.40 out per million tokens, last verified October 2, 2026. Open weights: yes. Status: Superseded since August 14, 2026; the current pick is GLM 5.3. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.

The previous GLM text-only generation, available as an MIT-licensed checkpoint and documented token-API model; GLM-5.3 uses the same base with newer post-training.

Recorded profile verification October 2, 2026Individual provider fields may change

AI model specification details
SpecificationGLM 5.2
ProviderZ.ai
TierBalanced
Context window1M
Max output131K
Input / 1M tokens$1.40
Output / 1M tokens$4.40
WeightsOpen
ParametersNot verifiedUnverified
Reasoning levelsnone, minimal, low, medium, high, xhigh, max
Modalitiestext
LicenseMIT
API model idglm-5.2
ReleasedJune 16, 2026

Pricing tiers: Z.ai token API $1.40/$4.40 per MTok, cached input $0.26; cache storage is limited-time free with no verified end date. Text-only API advertises 1M context and a 131,072 output ceiling. The MIT checkpoint config sets 1,048,576 native context.

Best for

  • Open-weight deployments
  • Reasoning
  • Cost-sensitive work

Watch out

Coding Plan 5.2 requests route to 5.3; direct token-API identity is separate. GLM-5.2 supports thinking on/off: none/minimal stop thinking, low/medium map to high, and xhigh maps to max (default). Accepted effort strings do not represent seven independent compute tiers. Exact total/active parameter counts remain unverified; do not infer them solely from the shared base.

History

GLM 5.2 timeline

Release and status events for this model that passed two-source verification — dated, sourced, and linked.

Source receipts

Catalog figures for this model were checked against the following sources.

Common questions

GLM 5.2

Answered from the verified figures on this page rather than general guidance.

How much does GLM 5.2 cost per million tokens?
GLM 5.2 lists base rates of $1.40 per million input tokens and $4.40 per million output tokens. Estimate both input and output token volume and any additional charges for your workload. Z.ai token API $1.40/$4.40 per MTok, cached input $0.26; cache storage is limited-time free with no verified end date. Text-only API advertises 1M context and a 131,072 output ceiling. The MIT checkpoint config sets 1,048,576 native context.
What is GLM 5.2's context window?
GLM 5.2 accepts about 1M tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is GLM 5.2 best for?
GLM 5.2 is a balanced tier from Z.ai. It suits open-weight deployments, reasoning, cost-sensitive work. Coding Plan 5.2 requests route to 5.3; direct token-API identity is separate. GLM-5.2 supports thinking on/off: none/minimal stop thinking, low/medium map to high, and xhigh maps to max (default). Accepted effort strings do not represent seven independent compute tiers. Exact total/active parameter counts remain unverified; do not infer them solely from the shared base.
Can I self-host GLM 5.2?
GLM 5.2 publishes open weights, but self-hosting depends on the licence, hardware footprint, quantisation quality, and serving stack. A hosted API is often cheaper until you have measured throughput and concurrency on your own hardware.
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