Model comparison - Similar price, same tier
GLM-5.3 vs GPT-5.4 Mini
GLM-5.3 is from Z.ai and GPT-5.4 Mini is from OpenAI. On list price, GLM-5.3 charges 1.9x GPT-5.4 Mini's input price ($1.40 vs $0.75 per 1M tokens), and GLM-5.3 charges 2% less than GPT-5.4 Mini for output ($4.40 vs $4.50 per 1M tokens). GLM-5.3 has a 1,000,000-token context window and GPT-5.4 Mini 400,000 tokens, and both return up to 128,000 output tokens per response. GLM-5.3 was released on August 18, 2026 and GPT-5.4 Mini on March 17, 2026. GLM-5.3 publishes open weights (GLM-5.3 license (Hugging Face license tag: other)); GPT-5.4 Mini is closed-weights.
Last verified from each provider's pricing page. All sources
Side-by-side specs
| Spec | GLM-5.3 | GPT-5.4 Mini |
|---|---|---|
| Provider | Z.ai | OpenAI |
| Input / 1M tokens | $1.40 | $0.75 |
| Output / 1M tokens | $4.40 | $4.50 |
| Cache read / 1M | $0.26 | $0.075 |
| Batch input / 1M | - | $0.375 |
| Batch output / 1M | - | $2.25 |
| Context window | 1,000,000 | 400,000 |
| Max output | 128,000 | 128,000 |
| Release date | ||
| Weights | Open | Closed |
| License | GLM-5.3 license (Hugging Face license tag: other) | - |
| API model id | glm-5.3 | gpt-5.4-mini |
| AI Gateway id | zai/glm-5.3 | openai/gpt-5.4-mini |
| Last verified |
Prices in USD per 1M tokens at each provider's standard first-party rate. A dash means the provider does not bill that item separately or no primary page states it.
What each costs in practice
The same three workloads every model page uses, worked from each model's standard list rates. Swap in your own token counts with the math on each model's page.
| Workload | GLM-5.3 | GPT-5.4 Mini |
|---|---|---|
| One agent session1M input tokens and 100K output tokens, no caching. | $1.84 | $1.20 |
| A chat app10,000 requests a day at 2K input and 500 output tokens each. | $50.00$1,500.00 per 30-day month | $37.50$1,125.00 per 30-day month |
| The same session at a 90% cache hit90% of the input is read from the prompt cache. The one-time cache write premium is not included. | $0.814 | $0.5925 |
Show the math
GLM-5.3
- One agent sessionInput: 1M x $1.40 = $1.40Output: 0.1M x $4.40 = $0.44
- A chat appInput: 20M x $1.40 = $28.00Output: 5M x $4.40 = $22.00
- The same session at a 90% cache hitCached input: 0.9M x $0.26 = $0.234Uncached input: 0.1M x $1.40 = $0.14Output: 0.1M x $4.40 = $0.44
GPT-5.4 Mini
- One agent sessionInput: 1M x $0.75 = $0.75Output: 0.1M x $4.50 = $0.45
- A chat appInput: 20M x $0.75 = $15.00Output: 5M x $4.50 = $22.50
- The same session at a 90% cache hitCached input: 0.9M x $0.075 = $0.0675Uncached input: 0.1M x $0.75 = $0.075Output: 0.1M x $4.50 = $0.45
Benchmarks under the same setting
No board in the benchmark directory lists both GLM-5.3 and GPT-5.4 Mini under the same setting, so there is no like-for-like score to show here.
Set them up in your tools
Step-by-step guides whose official docs list GLM-5.3 or GPT-5.4 Mini by model id.
- Use GLM in AiderLists GLM-5.3
- Use GLM in Claude CodeLists GLM-5.3
- Use GLM in ClineLists GLM-5.3
- Use GLM in Codex CLILists GLM-5.3
- Use GLM in ContinueLists GLM-5.3
- Use GLM in CursorLists GLM-5.3
- Use GLM in GooseLists GLM-5.3
- Use GLM in Kilo CodeLists GLM-5.3
- Use GLM in OpenCodeLists GLM-5.3
- Use GLM in Roo CodeLists GLM-5.3
- Use GLM in ZedLists GLM-5.3
Model pages
FAQ
How do GLM-5.3 and GPT-5.4 Mini compare on price?
On list price, GLM-5.3 charges 1.9x GPT-5.4 Mini's input price ($1.40 vs $0.75 per 1M tokens), and GLM-5.3 charges 2% less than GPT-5.4 Mini for output ($4.40 vs $4.50 per 1M tokens). For one agent session of 1M input and 100K output tokens with no caching, that is $1.84 on GLM-5.3 and $1.20 on GPT-5.4 Mini. Prices are each provider's first-party list rates, verified October 17, 2026 and October 17, 2026.
What are the context windows of GLM-5.3 and GPT-5.4 Mini?
GLM-5.3 has a 1,000,000-token context window and GPT-5.4 Mini 400,000 tokens, and both return up to 128,000 output tokens per response.
Are GLM-5.3 and GPT-5.4 Mini open weights?
GLM-5.3's weights are published at huggingface.co under the GLM-5.3 license (Hugging Face license tag: other). GPT-5.4 Mini is closed-weights and is called through OpenAI's API as gpt-5.4-mini.
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- GLM-5.3 vs GPT-6.1 SolOpen weights vs closed
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- GPT-5.4 Mini vs Grok Build 0.1Similar price, same tier
- Claude Opus 5.5 vs GLM-5.3Open weights vs closed
Sources
GLM-5.3 verified from docs.z.ai; GPT-5.4 Mini verified from developers.openai.com. This page is as current as the older of the two: .
- https://docs.z.ai/guides/overview/pricing
- https://developers.openai.com/api/docs/pricing
- https://docs.z.ai/guides/llm/glm-5.3
- https://docs.z.ai/release-notes/new-released
- https://docs.z.ai/openapi.json
- https://huggingface.co/zai-org/GLM-5.3
- https://ai-gateway.vercel.sh/v1/models
- https://developers.openai.com/api/docs/models/gpt-5.4-mini
- https://developers.openai.com/api/docs/changelog
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