---
title: "GLM-5.3-Fast - Model Details & Comparison"
description: "GLM-5.3-Fast from Baseten: capabilities, context limits, pricing, and side-by-side comparisons with alternative models."
url: "https://www.getmaxim.ai/bifrost/model-library/compare/baseten/glm-5.3-fast"
markdown: "https://www.getmaxim.ai/bifrost/model-library/compare/baseten/glm-5.3-fast.md"
---

# GLM-5.3-Fast - Model Details & Comparison

> GLM-5.3-Fast from Baseten: capabilities, context limits, pricing, and side-by-side comparisons with alternative models.

## Important Links

- [View MCP Gateway](https://www.getmaxim.ai/resources/mcp-gateway.md)
- [Features](https://www.getmaxim.ai/bifrost/#features)
- [Enterprise](https://www.getmaxim.ai/enterprise)
- [Pricing](https://www.getmaxim.ai/pricing.md)
- [Docs](https://docs.getbifrost.ai)
- [GitHub](https://github.com/maximhq/bifrost)
- [Book a Demo](https://www.getmaxim.ai/book-a-demo)

## About GLM-5.3-Fast

GLM-5.3-Fast is a chat model from Baseten, one of 32 chat models they offer. It is priced at $2.10 per 1M input tokens and $6.60 per 1M output tokens, ranking 3242 out of 4042 chat models by cost and cheaper than 20% of models in this category. GLM-5.3-Fast supports vision, function calling, reasoning, prompt caching, structured output. Its 1,049K-token context window is in the top 15% among chat models.

## Specifications

- **Baseten Provider.**
- **Chat Mode.**
- **1,048,576 Max Input Tokens.**
- **262,144 Max Output Tokens.**
- **$2.10 / 1M tokens Input Price.**
- **$6.60 / 1M tokens Output Price.**

## Capabilities

GLM-5.3-Fast supports: Function Calling, Vision, Reasoning, Prompt Caching, Response Schema, Tool Choice.

## GLM-5.3-Fast Pricing Overview

At $2.10 per 1M input tokens and $6.60 per 1M output tokens, GLM-5.3-Fast ranks 3242 out of 4042 chat models by input cost. It is more expensive compared to the median of $0.60 for chat models, and is cheaper than 20% of models in this category.

GLM-5.3-Fast is one of 32 Baseten chat models, with support for vision, function calling, reasoning, prompt caching, structured output. its 1,049K-token context window places it in the top 15% of chat models.

## Models to Compare

Alternatives to GLM-5.3-Fast with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| anthropic.claude-sonnet-5 | AWS Bedrock | $2.00 | $10.00 |
| global.anthropic.claude-sonnet-5 | AWS Bedrock | $2.00 | $10.00 |
| us.anthropic.claude-sonnet-5 | AWS Bedrock | $2.20 | $11.00 |
| eu.anthropic.claude-sonnet-5 | AWS Bedrock | $2.20 | $11.00 |
| au.anthropic.claude-sonnet-5 | AWS Bedrock | $2.20 | $11.00 |

## Related Resources

- [All Baseten pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/baseten.md)

## FAQ

### Is GLM-5.3-Fast cheaper than anthropic.claude-sonnet-5?

No. GLM-5.3-Fast costs $2.10 per 1M input tokens while anthropic.claude-sonnet-5 costs $2.00 per 1M input tokens, making anthropic.claude-sonnet-5 5% more affordable for input. However, GLM-5.3-Fast may offer different capabilities or performance characteristics that justify the price difference.

### How does GLM-5.3-Fast pricing compare to the average chat model?

GLM-5.3-Fast input pricing is $2.10 per 1M tokens, which is 250% above the median of $0.60 for chat models. It ranks 3242 out of 4042 chat models by input cost, making it cheaper than 20% of models in this category. For output, it costs $6.60 per 1M tokens compared to the median of $1.80.

### What makes GLM-5.3-Fast different from other Baseten models?

Among Baseten's 32 chat models, GLM-5.3-Fast ranks 30 by input cost.

### What are the best alternatives to GLM-5.3-Fast?

The most comparable chat models to GLM-5.3-Fast are: anthropic.claude-sonnet-5 from AWS Bedrock ($2.00/1M input tokens); global.anthropic.claude-sonnet-5 from AWS Bedrock ($2.00/1M input tokens); us.anthropic.claude-sonnet-5 from AWS Bedrock ($2.20/1M input tokens); eu.anthropic.claude-sonnet-5 from AWS Bedrock ($2.20/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library.

### How large is GLM-5.3-Fast's context window?

GLM-5.3-Fast supports up to 1,048,576 input tokens, placing it in the top 15% of chat models by context window size (rank 333 of 4003). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories.

### How do I calculate GLM-5.3-Fast costs?

GLM-5.3-Fast is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $2.10 and generating 1M output tokens costs $6.60.

## Related Resources

- [Model library](https://www.getmaxim.ai/bifrost/model-library.md)
- [LLM cost calculator](https://www.getmaxim.ai/bifrost/llm-cost-calculator.md)
- [Docs: Bifrost docs](https://docs.getbifrost.ai)
- [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost)
- [Pricing: Bifrost pricing](https://www.getmaxim.ai/pricing.md)
- [Enterprise: Bifrost enterprise](https://www.getmaxim.ai/enterprise)
- [Book a Demo: Bifrost demo](https://www.getmaxim.ai/book-a-demo)
- [Resources: Bifrost resources](https://www.getmaxim.ai/resources.md)

---

*This is a markdown version of [https://www.getmaxim.ai/bifrost/model-library/compare/baseten/glm-5.3-fast](https://www.getmaxim.ai/bifrost/model-library/compare/baseten/glm-5.3-fast) for AI/LLM consumption.*