GLM 4.5 Air API pricing
As of October 21, 2026, Z.ai GLM 4.5 Air costs $0.13 per million input tokens and $0.85 per million output tokens through OpenRouter, with cached input at $0.025 per million.
- Input, per million tokens$0.13
- Output, per million tokens$0.85
- Cached input, per million$0.025
- Context window131K tokens
- Max output98K tokens
- Output speedNot measured
What a request costs
Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.
| Workload | Tokens | One request | 1,000 requests | Fits the context window |
|---|---|---|---|---|
| Chat turn | 1K input + 500 output tokens | $0.0006 | $0.555 | Yes |
| Repository review | 50K input + 3K output tokens | $0.0091 | $9.05 | Yes |
| Agent loop | 200K input + 10K output tokens | $0.035 | $34.50 | No, it would need splitting |
| Solved coding task | One SWE-bench Verified attempt, divided by the share that succeed | Not computable | Not computable |
Price history
We read this price every day and have since October 15, 2026. It has not changed yet; any change will be listed here with its date.
- October 15, 2026 First recorded: $0.13 input, $0.85 output
Cheaper models as good as GLM 4.5 Air
Models within two points of GLM 4.5 Air or above it on the Artificial Analysis Intelligence Index, with a lower output price. Cheapest first.
- Ling 3.0 Flash$0.063 Overall 20.1 against 11.1 · 93% cheaper output
- gpt-oss-20b$0.09 Overall 10.0 against 11.1 · 89% cheaper output
- Qwen3.5-9B$0.13 Overall 13.3 against 11.1 · 85% cheaper output
- Mercury 2.5$0.15 Overall 12.3 against 11.1 · 82% cheaper output
- Ling 3.0 Flash VL$0.18 Overall 24.6 against 11.1 · 79% cheaper output
GLM 4.5 Air pricing questions
- How much does GLM 4.5 Air cost per million tokens?
- $0.13 per million input tokens and $0.85 per million output tokens, as listed on OpenRouter on October 21, 2026.
- Does GLM 4.5 Air support prompt caching?
- Yes. OpenRouter lists cached input at $0.025 per million tokens, against $0.13 for uncached input.
- Is there a cheaper model as good as GLM 4.5 Air?
- Ling 3.0 Flash scores 20.1 on the Artificial Analysis Intelligence Index, within two points of GLM 4.5 Air or above it, and costs $0.063 per million output tokens.
- Has the price of GLM 4.5 Air changed?
- Not since we started recording it daily on October 15, 2026.