---
title: "gpt-5.6-luna - Model Details & Comparison"
description: "gpt-5.6-luna from Zerogpu: capabilities, context limits, pricing, and side-by-side comparisons with alternative models."
url: "https://www.getmaxim.ai/bifrost/model-library/compare/zerogpu/gpt-5.6-luna"
markdown: "https://www.getmaxim.ai/bifrost/model-library/compare/zerogpu/gpt-5.6-luna.md"
---

# gpt-5.6-luna - Model Details & Comparison

> gpt-5.6-luna from Zerogpu: 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 gpt-5.6-luna

gpt-5.6-luna is a chat model from Zerogpu, one of 13 chat models they offer. It is priced at $0.20 per 1M input tokens and $1.20 per 1M output tokens, ranking 1178 out of 4042 chat models by cost and cheaper than 70% of models in this category. gpt-5.6-luna supports function calling, reasoning, prompt caching, structured output. Its 272K-token context window is in the top 36% among chat models.

## Specifications

- **Zerogpu Provider.**
- **Chat Mode.**
- **272,000 Max Input Tokens.**
- **128,000 Max Output Tokens.**
- **$0.20 / 1M tokens Input Price.**
- **$1.20 / 1M tokens Output Price.**

## Capabilities

gpt-5.6-luna supports: Function Calling, Reasoning, Prompt Caching, Response Schema, Tool Choice.

## gpt-5.6-luna Pricing Overview

At $0.20 per 1M input tokens and $1.20 per 1M output tokens, gpt-5.6-luna ranks 1178 out of 4042 chat models by input cost. It is more affordable compared to the median of $0.60 for chat models, and is cheaper than 70% of models in this category.

gpt-5.6-luna is one of 13 Zerogpu chat models, with support for function calling, reasoning, prompt caching, structured output. its 272K-token context window places it in the top 36% of chat models.

## Models to Compare

Alternatives to gpt-5.6-luna with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| gpt-5.4-nano | Azure | $0.20 | $1.25 |
| gpt-5.4-nano-2026-03-17 | Azure | $0.20 | $1.25 |
| gpt-5-mini | Azure | $0.25 | $2.00 |
| gpt-5.6-luna | Azure | $0.20 | $1.20 |
| gpt-5.6-luna-2026-07-09 | Azure | $0.20 | $1.20 |

- [Compare gpt-5.4-nano](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5.4-nano.md)
- [Compare gpt-5.4-nano-2026-03-17](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5.4-nano-2026-03-17.md)
- [Compare gpt-5-mini](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5-mini.md)
- [Compare gpt-5.6-luna](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5.6-luna.md)
- [Compare gpt-5.6-luna-2026-07-09](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5.6-luna-2026-07-09.md)

## Related Resources

- [Calculate gpt-5.6-luna costs](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/zerogpu/model/gpt-5.6-luna.md)
- [All Zerogpu pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/zerogpu.md)

## FAQ

### Is gpt-5.6-luna cheaper than gpt-5.4-nano?

No. gpt-5.6-luna costs $0.20 per 1M input tokens while gpt-5.4-nano costs $0.20 per 1M input tokens, making gpt-5.4-nano 0% more affordable for input. However, gpt-5.6-luna may offer different capabilities or performance characteristics that justify the price difference.

### How does gpt-5.6-luna pricing compare to the average chat model?

gpt-5.6-luna input pricing is $0.20 per 1M tokens, which is 67% below the median of $0.60 for chat models. It ranks 1178 out of 4042 chat models by input cost, making it cheaper than 70% of models in this category. For output, it costs $1.20 per 1M tokens compared to the median of $1.80.

### What makes gpt-5.6-luna different from other Zerogpu models?

Among Zerogpu's 13 chat models, gpt-5.6-luna ranks 10 by input cost.

### What are the best alternatives to gpt-5.6-luna?

The most comparable chat models to gpt-5.6-luna are: gpt-5.4-nano from Azure ($0.20/1M input tokens); gpt-5.4-nano-2026-03-17 from Azure ($0.20/1M input tokens); gpt-5-mini from Azure ($0.25/1M input tokens); gpt-5.6-luna from Azure ($0.20/1M 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 do I calculate gpt-5.6-luna costs?

gpt-5.6-luna 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 $0.20 and generating 1M output tokens costs $1.20.

## 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)

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*This is a markdown version of [https://www.getmaxim.ai/bifrost/model-library/compare/zerogpu/gpt-5.6-luna](https://www.getmaxim.ai/bifrost/model-library/compare/zerogpu/gpt-5.6-luna) for AI/LLM consumption.*