GLM API pricing
Z.ai's GLM models. GLM-5.3 costs $1.40 / $4.40 per 1M tokens; GLM-5.3 Flash costs $0.15 / $0.50.
GLM-5.3
The 3rd cheapest of 12 current frontier models (blended 3:1). Cheapest: DeepSeek V4 Pro, $1.32 / $3.96.
Capability score 157, joint 14th of 29 current models scored on the Epoch Capabilities Index (range 155–159).
GPT-6 Luna scores level (157) and costs 18× less on a coding agent: $25.98 vs $458 a month.
Source: Epoch Capabilities Index by Epoch AI, CC BY 4.0, read 11 Nov 2026. What the score means
What it costs in practice
GLM-5.3 at list prices, no batch discount.
| 1,000 chat replies1,500 tokens in and 300 out each | $3.42 |
|---|---|
| Summarising 100 long reports20,000 tokens in and 800 out each | $3.15 |
| A month of a coding agent400 tasks, 85% of input cached | $358 |
The coding-agent example assumes 85% of input is served from cache, typical for agents that resend the same context each step. Work out AI agent cost on GLM-5.3
Details
glm-5.3Checked 13 Oct 2026 against Z.ai pricing and DataNorth (release date) .
Estimate your monthly cost
List prices, no batch discount
| Model | Input / output per 1M | Per month |
|---|---|---|
| GLM-5.3 | $1.40 / $4.40 | $22.80 |
| GLM-5.3 FlashX | $0.37 / $1.25 | $6.20 |
| GLM-5.3 Flash | $0.15 / $0.50 | $2.50 |
| DeepSeek V4 ProCheaper alternative · DeepSeek | $1.32 / $3.96 | $21.12 |
| Muse Spark 1.3Similar price · Meta | $1.25 / $4.25 | $21.00 |
Type amounts like 500K, 25M or 2B.
Price GLM-5.3 in: Token cost calculator · AI agent cost · Token counter
Cheaper alternative
DeepSeek V4 Pro (DeepSeek) costs $1.32 / $3.96 per 1M tokens, 8% less than GLM-5.3 at a 3:1 input-to-output mix. It’s the cheapest current frontier model from another family. Cheaper doesn’t mean as good: test it on your own tasks.
Compare GLM-5.3 with DeepSeek V4 Pro
Similar price from another provider: Muse Spark 1.3, $1.25 / $4.25. Compare
Compare GLM-5.3 with
Side by side: prices, cached and batch rates, and the cost of the same workload.
Other GLM models
Mistral also resells GLM-5.3 at the same price.
| Model | Input / 1M | Output / 1M | Cached input | Context | Released |
|---|---|---|---|---|---|
| $0.37 | $1.25 | $0.075 | 1M | 18 Sep 2026 | |
| $0.15 | $0.50 | $0.030 | 1M | 26 Aug 2026 |
Version details
GLM-5.3 FlashX
$0.37 / $1.25 per 1M tokenscached $0.075 · 1M context · 128K max output
- The same model as GLM-5.3 Flash on faster serving (Z.ai quotes up to 200 tokens per second), at a higher price.
Checked 13 Oct 2026 against Z.ai pricing and Z.ai model page .
GLM-5.3 Flash
$0.15 / $0.50 per 1M tokenscached $0.030 · 1M context
Checked 13 Oct 2026 against Z.ai pricing .
Compare GLM-5.3
Price history
All changes- Z.ai added GLM-5.3 FlashX, a faster-serving GLM-5.3 Flash, at $0.37 / $1.25 per 1M tokens. Source
Qwen3.8 Flash ($0.15 / $0.47) and GLM-5.3 Flash ($0.15 / $0.50) launched. Source- Z.ai launched GLM-5.3 at $1.40 / $4.40. Source
Every dated price: price records · CSV. Cite as: AI Token Price, GLM pricing, https://aitokenprice.com/pricing/glm#price-history
Z.ai pricing rules
- Mistral also resells GLM-5.3 at the same price.
Questions
How much does GLM-5.3 cost?
As of 13 Oct 2026, GLM-5.3 costs $1.40 per million input tokens and $4.40 per million output tokens, and $0.26 per million cached input tokens. Prices checked 13 Oct 2026.
How much does GLM-5.3 FlashX cost?
GLM-5.3 FlashX costs $0.37 per million input tokens and $1.25 per million output tokens, with cached input at $0.075. Checked 13 Oct 2026.
How much does GLM-5.3 Flash cost?
GLM-5.3 Flash costs $0.15 per million input tokens and $0.50 per million output tokens, with cached input at $0.03. Checked 13 Oct 2026.
What is the cheapest GLM model?
GLM-5.3 Flash, at $0.15 / $0.50 per million input / output tokens.
What is GLM-5.3's context window?
1M tokens.
Does GLM-5.3 support prompt caching?
Yes. Repeated input read from the cache costs $0.26 per million tokens, 81% less than normal input.