---
title: "gpt-5.3-codex - Model Details & Comparison"
description: "gpt-5.3-codex from Perplexity: 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/perplexity/gpt-5.3-codex"
markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/perplexity/gpt-5.3-codex.md"
---

# gpt-5.3-codex - Model Details & Comparison

> gpt-5.3-codex from Perplexity: 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://maxim-root-proxy-preview.getmaxim.workers.dev/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 gpt-5.3-codex

gpt-5.3-codex is a responses model from Perplexity, one of 55 responses models they offer. It is priced at $3.50 per 1M input tokens and $28.00 per 1M output tokens, ranking 105 out of 160 responses models by cost and cheaper than 34% of models in this category.

## Specifications

- **Perplexity Provider.**
- **Responses Mode.**
- **$3.50 / 1M tokens Input Price.**
- **$28.00 / 1M tokens Output Price.**

## gpt-5.3-codex Pricing Overview

At $3.50 per 1M input tokens and $28.00 per 1M output tokens, gpt-5.3-codex ranks 105 out of 160 responses models by input cost. It is more expensive compared to the median of $2.00 for responses models, and is cheaper than 34% of models in this category.

## Models to Compare

Alternatives to gpt-5.3-codex with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| gpt-5.6-sol | Github Copilot | $4.00 | $20.00 |
| gpt-daybreak-blue-latest | OpenAI | $4.00 | $20.00 |
| openai.gpt-5.4 | Bedrock Mantle | $3.30 | $19.80 |
| gpt-5.2-codex | Azure | $1.75 | $14.00 |
| gpt-5.3-codex | Azure | $1.75 | $14.00 |

- [Compare gpt-5.6-sol](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/github_copilot/gpt-5.6-sol.md)
- [Compare gpt-daybreak-blue-latest](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-daybreak-blue-latest.md)
- [Compare openai.gpt-5.4](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock_mantle/openai.gpt-5.4.md)
- [Compare gpt-5.2-codex](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-5.2-codex.md)
- [Compare gpt-5.3-codex](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-5.3-codex.md)

## Related Resources

- [Calculate gpt-5.3-codex costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/perplexity/model/gpt-5.3-codex.md)
- [Check Perplexity status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/perplexity.md)
- [All Perplexity pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/perplexity.md)

## FAQ

### Is gpt-5.3-codex cheaper than gpt-5.6-sol?

Yes. gpt-5.3-codex costs $3.50 per 1M input tokens compared to gpt-5.6-sol's $4.00 per 1M input tokens, making it 14% more affordable. Both are responses models and share support for vision, function calling, reasoning, structured output.

### How does gpt-5.3-codex pricing compare to the average responses model?

gpt-5.3-codex input pricing is $3.50 per 1M tokens, which is 75% above the median of $2.00 for responses models. It ranks 105 out of 160 responses models by input cost, making it cheaper than 34% of models in this category. For output, it costs $28.00 per 1M tokens compared to the median of $11.00.

### What makes gpt-5.3-codex different from other Perplexity models?

Among Perplexity's 55 responses models, gpt-5.3-codex ranks 44 by input cost.

### What are the best alternatives to gpt-5.3-codex?

The most comparable responses models to gpt-5.3-codex are: gpt-5.6-sol from Github Copilot ($4.00/1M input tokens); gpt-daybreak-blue-latest from OpenAI ($4.00/1M input tokens); openai.gpt-5.4 from Bedrock Mantle ($3.30/1M input tokens); gpt-5.2-codex from Azure ($1.75/1M 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 check if Perplexity is down?

You can monitor Perplexity service health in real time on the Bifrost Perplexity Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds.

### How do I calculate gpt-5.3-codex costs?

gpt-5.3-codex 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 $3.50 and generating 1M output tokens costs $28.00.

## Related Resources

- [Perplexity models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/perplexity.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://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://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/perplexity/gpt-5.3-codex](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/perplexity/gpt-5.3-codex) for AI/LLM consumption.*