# GLM-5.3-Flash Free API pricing through OpenCode

Publisher: LLMRates.ai
Canonical page: https://www.llmrates.ai/models/opencode-zen/glm-5-3-flash-free
Model identity: provider=opencode-zen; slug=glm-5-3-flash-free

## What does this model cost?

GLM-5.3-Flash Free through OpenCode costs USD 0 per 1M input tokens and USD 0 per 1M output tokens for the standard processing quote below.
Region: not stated by the source. Input tier minimum: not stated; maximum: not stated tokens.
Official pricing source: https://opencode.ai/docs/zen/
Price last verified (UTC): not stated.

Example: 1,000 requests, each with 1,000 input and 200 billed text output tokens, cost USD 0. Formula: (1,000 × 1,000 × input rate + 1,000 × 200 × output rate) / 1,000,000.


## Scope and limitations

Prices use the currency published by the provider; no currency conversion is applied.
The example uses uncached text input and standard processing. Reasoning tokens, taxes, tools, media and other fees are excluded. Unknown limits are not guarantees. Compare equivalent capabilities, regions and request sizes before choosing a provider. Consult the official source for current terms.
Context window (tokens): not stated
Maximum output (tokens): not stated

## Current token price rows

All amounts below are per 1M tokens, in each row's stated currency. Cached input is a separate rate, not an additional discount applied to these numbers. Media and other non-token charges are available in the JSON data.

| Processing | Tier label | Region | Input tier minimum | Input tier maximum | Input / 1M | Output / 1M | Cached input / 1M | Verified (UTC) | Official source |
|---|---|---|---:|---:|---:|---:|---:|---|---|
| standard | Not stated | Not stated | Not stated | Not stated | USD 0 | USD 0 | USD 0 | Not stated | https://opencode.ai/docs/zen/ |

## Data and attribution

- Provider-specific JSON: https://www.llmrates.ai/api/models/glm-5-3-flash-free?provider=opencode-zen
- Methodology: https://www.llmrates.ai/methodology
- Open dataset and reuse license: https://www.llmrates.ai/open-llm-pricing-dataset
- Cite: LLMRates.ai, “GLM-5.3-Flash Free API pricing through OpenCode”, https://www.llmrates.ai/models/opencode-zen/glm-5-3-flash-free. Include the quote's verification date and official pricing source when reusing a figure.