# GLM-5.3 Flash

Model tracker · checked 2026-10-14 · https://dbggr.dev/models/glm-5-3-flash/

GLM-5.3 Flash is a fast open-weight model from Z.ai, released 26 August 2026. At Z.ai it costs $0.15 per million input tokens and $0.50 per million output tokens, with a 1M-token context window. 8 providers serve it; the cheapest is Baseten at $0.15 input and $0.50 output.

- Made by: Z.ai
- Released: 2026-08-26
- Status: Generally available
- Tier: Fast
- Weights: Open
- Context window: 1,000,000 tokens
- Max output: 128,000 tokens
- Input: text, image, video
- API id: glm-5.3-flash
- Docs: https://docs.z.ai/guides/vlm/glm-5.3-flash

## GLM-5.3 Flash price at 8 providers

US dollars per million tokens. Blended is 3 input tokens for every output token, one number to compare on. The cheapest blended price is highlighted.

| Provider | Input | Output | Cached input | Blended | Batch | Checked |
|---|---|---|---|---|---|---|
| Baseten | $0.15 | $0.50 | $0.03 | $0.237 | – | [2026-10-14](https://www.baseten.co/pricing/) |
| Cloudflare | $0.15 | $0.50 | $0.03 | $0.237 | – | [2026-10-14](https://developers.cloudflare.com/workers-ai/platform/pricing/) |
| Fireworks AI | $0.15 | $0.50 | $0.03 | $0.237 | 50% off | [2026-10-14](https://docs.fireworks.ai/serverless/pricing) |
| Nebius Group N.V. | $0.15 | $0.50 | – | $0.237 | – | [2026-10-14](https://tokenfactory.nebius.com/model-catalog.md) |
| Novita AI | $0.15 | $0.50 | $0.03 | $0.237 | – | [2026-10-14](https://novita.ai/pricing) |
| Together AI | $0.15 | $0.50 | $0.03 | $0.237 | – | [2026-10-14](https://www.together.ai/pricing) |
| Z.ai | $0.15 | $0.50 | $0.03 | $0.237 | – | [2026-10-14](https://docs.z.ai/guides/overview/pricing) |
| Modal Labs | $0.45 | $1.50 | $0.09 | $0.713 | – | [2026-10-14](https://modal.com/library/zai/glm-5-3-flash) |

- Cloudflare: Needs Workers Paid or AI Gateway credits. Billed in Neurons at $0.011 per 1,000; 10,000 Neurons a day free.
- Fireworks AI: US-hosted variant: $0.225 / $0.75.
- Nebius Group N.V.: No cached-input or batch price published.
- Z.ai: Cached input storage free for a limited time.
- Modal Labs: Modal Shared Endpoint, billed per token from us-west; plan credits can't be used for Shared Endpoint usage.

## GLM-5.3 Flash benchmarks

| Benchmark | Score | What it measures | Reported by |
|---|---|---|---|
| LMArena text score | 1473 | Elo-style score from people voting between answers | [Independent](https://arena.ai/leaderboard/text) |

Scores reported by a model's maker aren't independently checked.

## Models like GLM-5.3 Flash

| Model | Input | Output | Context | Weights |
|---|---|---|---|---|
| GLM-5.3 Flash | $0.15 | $0.50 | 1M | Open |
| [Qwen3.8 Flash](https://dbggr.dev/models/qwen3-8-flash/) | $0.15 | $0.47 | 1M | Closed |
| [Gemma 4 26B A4B](https://dbggr.dev/models/gemma-4-26b-a4b/) | $0.15 | $0.60 | 262K | Open |
| [Mistral Small 4](https://dbggr.dev/models/mistral-small-4/) | $0.15 | $0.60 | 256K | Open |
| [Gemma 4 31B](https://dbggr.dev/models/gemma-4-31b/) | $0.14 | $0.40 | 256K | Open |
| [Claude Haiku 5.5](https://dbggr.dev/models/claude-haiku-5-5/) | $0.10 | $0.50 | 1M | Closed |

## FAQ

### 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 at Z.ai, and $0.03 per million cached input tokens. Prices are list prices in US dollars, last checked 14 October 2026.

### What is GLM-5.3 Flash's context window?

GLM-5.3 Flash takes up to 1,000,000 tokens in one request and writes up to 128,000 tokens in one response.

### Is GLM-5.3 Flash open weight?

Yes. Z.ai publishes the weights, so you can run GLM-5.3 Flash yourself or at any host that serves it.

### Where can I use GLM-5.3 Flash?

GLM-5.3 Flash is available from Baseten, Cloudflare, Fireworks AI, Nebius Group N.V., Novita AI, Together AI, Z.ai and Modal Labs. At Z.ai, call it as `glm-5.3-flash`.