---
title: "ernie-4.5-21B-a3b-thinking - Model Details & Comparison"
description: "ernie-4.5-21B-a3b-thinking from Novita: capabilities, context limits, pricing, and side-by-side comparisons with alternative models."
url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/novita/ernie-4.5-21b-a3b-thinking"
markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/novita/ernie-4.5-21b-a3b-thinking.md"
---

# ernie-4.5-21B-a3b-thinking - Model Details & Comparison

> ernie-4.5-21B-a3b-thinking from Novita: capabilities, context limits, pricing, and side-by-side comparisons with alternative models.

## Important Links

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

## About ernie-4.5-21B-a3b-thinking

ernie-4.5-21B-a3b-thinking is a chat model from Novita, one of 80 chat models they offer. It is priced at $0.07 per 1M input tokens and $0.28 per 1M output tokens, ranking 205 out of 2669 chat models by cost and cheaper than 92% of models in this category. ernie-4.5-21B-a3b-thinking supports reasoning. It accepts up to 131K input tokens.

## Specifications

- **Novita Provider.**
- **Chat Mode.**
- **131,072 Max Input Tokens.**
- **65,536 Max Output Tokens.**
- **65,536 Max Tokens.**
- **$0.07 / 1M tokens Input Price.**
- **$0.28 / 1M tokens Output Price.**

## Capabilities

ernie-4.5-21B-a3b-thinking supports: Reasoning, System Messages.

## ernie-4.5-21B-a3b-thinking Pricing Overview

At $0.07 per 1M input tokens and $0.28 per 1M output tokens, ernie-4.5-21B-a3b-thinking ranks 205 out of 2669 chat models by input cost. It is more affordable compared to the median of $0.50 for chat models, and is cheaper than 92% of models in this category.

ernie-4.5-21B-a3b-thinking is one of 80 Novita chat models, with support for reasoning.

## Models to Compare

Alternatives to ernie-4.5-21B-a3b-thinking with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| glm-4.7-flash | Cloudflare | $0.06 | $0.40 |
| gpt-oss-20b | Fireworks AI | $0.07 | $0.30 |
| gpt-oss-20b | Groq | $0.07 | $0.30 |
| gpt-oss-safeguard-20b | Groq | $0.07 | $0.30 |
| openai.gpt-oss-20b-1:0 | AWS Bedrock | $0.07 | $0.30 |

- [Compare glm-4.7-flash](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/cloudflare/glm-4.7-flash.md)
- [Compare gpt-oss-20b](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/fireworks_ai/gpt-oss-20b.md)
- [Compare gpt-oss-20b](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/groq/gpt-oss-20b.md)
- [Compare gpt-oss-safeguard-20b](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/groq/gpt-oss-safeguard-20b.md)
- [Compare openai.gpt-oss-20b-1:0](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/openai.gpt-oss-20b-1-0.md)

## Related Resources

- [Calculate ernie-4.5-21B-a3b-thinking costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/novita/model/ernie-4.5-21b-a3b-thinking.md)
- [All Novita pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/novita.md)

## FAQ

### Is ernie-4.5-21B-a3b-thinking cheaper than glm-4.7-flash?

No. ernie-4.5-21B-a3b-thinking costs $0.07 per 1M input tokens while glm-4.7-flash costs $0.06 per 1M input tokens, making glm-4.7-flash 14% more affordable for input. However, ernie-4.5-21B-a3b-thinking may offer different capabilities or performance characteristics that justify the price difference.

### How does ernie-4.5-21B-a3b-thinking pricing compare to the average chat model?

ernie-4.5-21B-a3b-thinking input pricing is $0.07 per 1M tokens, which is 86% below the median of $0.50 for chat models. It ranks 205 out of 2669 chat models by input cost, making it cheaper than 92% of models in this category. For output, it costs $0.28 per 1M tokens compared to the median of $1.44.

### What makes ernie-4.5-21B-a3b-thinking different from other Novita models?

Among Novita's 80 chat models, ernie-4.5-21B-a3b-thinking ranks 17 by input cost.

### What are the best alternatives to ernie-4.5-21B-a3b-thinking?

The most comparable chat models to ernie-4.5-21B-a3b-thinking are: glm-4.7-flash from Cloudflare ($0.06/1M input tokens); gpt-oss-20b from Fireworks AI ($0.07/1M input tokens); gpt-oss-20b from Groq ($0.07/1M input tokens); gpt-oss-safeguard-20b from Groq ($0.07/1M 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 do I calculate ernie-4.5-21B-a3b-thinking costs?

ernie-4.5-21B-a3b-thinking 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 $0.07 and generating 1M output tokens costs $0.28.

## Related Resources

- [Novita models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/novita.md)
- [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md)
- [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md)
- [Docs: Bifrost docs](https://docs.getbifrost.ai)
- [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost)
- [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md)
- [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise)
- [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo)
- [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md)

---

*This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/novita/ernie-4.5-21b-a3b-thinking](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/novita/ernie-4.5-21b-a3b-thinking) for AI/LLM consumption.*