# OpenAI
<a name="model-cards-openai"></a>

You can use all models on this page with both the Responses API and the Chat Completions API on `bedrock-mantle`. See each model card for details.

The following OpenAI models are available in Amazon Bedrock:


| **Model** | **Description** | 
| --- | --- | 
| [GPT-6 Astra](model-card-openai-gpt-6-astra.md) | OpenAI's most capable model, built for complex reasoning, coding, computer use, research, and document creation. | 
| [GPT-5.6 Sol](model-card-openai-gpt-56-sol.md) | The most capable OpenAI model yet, delivering frontier reasoning and state-of-the-art agentic performance across coding, cybersecurity, and scientific research. | 
| [GPT-5.6 Terra](model-card-openai-gpt-56-terra.md) | Balanced performance competitive with GPT-5.5 at half the cost, built for everyday production workloads at scale. | 
| [GPT-5.6 Luna](model-card-openai-gpt-56-luna.md) | Fast and affordable inference at OpenAI's lowest cost, built for high-volume tasks where speed and efficiency matter. | 
| [Daybreak Red: GPT-5.6 Cyber](model-card-openai-gpt-56-cyber.md) | A highly specialized model for advanced tasks like vulnerability research, exploit reproduction, and mitigation development. Requires Trusted Access for Cyber enrollment. | 
| [Daybreak Blue: GPT-5.6 Sol](model-card-openai-gpt-daybreak-blue-56-sol.md) | A specialized model for verified defenders conducting advanced, authorized cybersecurity work. Requires Trusted Access for Cyber enrollment. | 
| [GPT-5.5](model-card-openai-gpt-55.md) | GPT-5.5 is OpenAI's most capable model for complex professional work, designed for advanced coding, research, analysis, software operation, document workflows, and long-running agentic tasks. | 
| [GPT-5.4](model-card-openai-gpt-54.md) | GPT-5.4 brings frontier reasoning, coding, computer use, long-context workflows, and tool use to Amazon Bedrock for professional workflows that require reliable reasoning and action across complex business systems. | 
| [GPT OSS Safeguard 120B](model-card-openai-gpt-oss-safeguard-120b.md) | GPT OSS Safeguard 120B is OpenAI's 120-billion parameter open-source safety model for content moderation and guardrail enforcement in AI applications. | 
| [GPT OSS Safeguard 20B](model-card-openai-gpt-oss-safeguard-20b.md) | GPT OSS Safeguard 20B is OpenAI's compact 20-billion parameter open-source safety model for lightweight content moderation and guardrail tasks. | 
| [gpt-oss-120b](model-card-openai-gpt-oss-120b.md) | GPT OSS 120B is OpenAI's 120-billion parameter open-source general-purpose model for text generation, coding, and reasoning tasks. | 
| [gpt-oss-20b](model-card-openai-gpt-oss-20b.md) | GPT OSS 20B is OpenAI's 20-billion parameter open-source model for efficient text generation and coding at lower compute cost. |