GLM 5.3 Flash API pricing
2 providers serve GLM 5.3 Flash. GLM 5.3 Flash is a proprietary API model, up to 1311K context. Prices below are per 1M tokens, cheapest input first.
Refreshed 2026-08-28 · list prices from provider APIsAbout GLM 5.3 Flash
GLM 5.3 Flash was listed on the marketplace 2026-08-26 by Z AI. It is a text+image+video → text model with a 1311K-token context window. The weights are published as GLM 5.3 Flash on Hugging Face.
| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context | |
|---|---|---|---|---|---|
| OpenRouter marketplace quote | $0.075 | $0.250output floor | $0.015 | 1311K | Use |
| Together AI | $0.150 | $0.500 | $0.030 | 1049K | Use |
Price since listing
Listed at $0.075/1M input on 2026-08-27. Daily floor history accrues here as tracking continues.
The cheapest way to run GLM 5.3 Flash
On an illustrative 70M-input / 30M-output monthly workload, today's lowest listed cost is roughly $12.75/month, at OpenRouter. Input-heavy, output-heavy and cache-heavy workloads can produce different winners. Use the live mix calculator below rather than combining floors from two different providers. It is API-only, so the table above is your full set of options. Run your own numbers in the breakeven calculator, or read the breakeven math.
Your actual monthly cost
Cache read uses the listed cache rate where available; otherwise it falls back to normal input price. Batch, write-cache, volume and negotiated discounts are excluded.
Related models
| Model | Cheapest in $/1M | Cheapest out $/1M | Providers |
|---|---|---|---|
| GLM-4.7 | $0.400 | $1.50 | 11 |
| GLM-5.2 | $0.610 | $1.98 | 11 |
| GLM-4.6 | $0.400 | $1.75 | 9 |
| GLM-4.5 Air | $0.125 | $0.450 | 7 |
| GLM-5 | $0.600 | $2.08 | 7 |
| GLM-5.1 | $1.05 | $3.50 | 6 |
FAQ
What is the cheapest API for GLM 5.3 Flash?
As of 2026-08-28, the lowest input price for GLM 5.3 Flash is OpenRouter at $0.075 per 1M input tokens. The lowest output price is OpenRouter at $0.250 per 1M output tokens. The cheapest provider for a real workload depends on its input/output mix. The next-lowest input price is Together AI at $0.150, a 100% difference.
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