> ## Documentation Index
> Fetch the complete documentation index at: https://perplexity-cf-proxied-beta.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Models
> Explore available presets and third-party models for the Agent API, including Perplexity presets and third-party model support.
### Available Models
The Agent API supports direct access to models from multiple providers. All models are accessed directly from first-party providers with transparent token-based pricing.
Pricing rates are updated monthly and **reflect direct first-party provider pricing with no markup**. All charges are based on actual token consumption, and every API response includes exact token counts so you know your costs per request.
Not all third-party models support all features (e.g., reasoning, tools). Check model documentation for specific capabilities.
| Model | Input Price | Output Price | Cache Read Price | Provider Documentation |
| --------------------------------- | -------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | -------------------- | --------------------------------------------------------------------------------------- |
| **Perplexity Models** | | | | |
| `perplexity/sonar` | \$0.25 / 1M tokens | \$2.50 / 1M tokens | \$0.0625 / 1M tokens | [Sonar](https://docs.perplexity.ai/docs/getting-started/models/models/sonar) |
| **Anthropic Models** | | | | |
| `anthropic/claude-opus-4-6` | \$5 / 1M tokens | \$25 / 1M tokens | \$0.50 / 1M tokens | [Claude Opus 4.6](https://www.anthropic.com/news/claude-opus-4-6) |
| `anthropic/claude-opus-4-5` | \$5 / 1M tokens | \$25 / 1M tokens | \$0.50 / 1M tokens | [Claude Opus 4.5](https://www.anthropic.com/news/claude-opus-4-5) |
| `anthropic/claude-sonnet-4-6` | \$3 / 1M tokens | \$15 / 1M tokens | \$0.30 / 1M tokens | [Claude Sonnet 4.6](https://www.anthropic.com/news/claude-sonnet-4-6) |
| `anthropic/claude-sonnet-4-5` | \$3 / 1M tokens | \$15 / 1M tokens | \$0.30 / 1M tokens | [Claude Sonnet 4.5](https://www.anthropic.com/news/claude-sonnet-4-5) |
| `anthropic/claude-haiku-4-5` | \$1 / 1M tokens | \$5 / 1M tokens | \$0.10 / 1M tokens | [Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5) |
| **OpenAI Models** | | | | |
| `openai/gpt-5.2` | \$1.75 / 1M tokens | \$14 / 1M tokens | \$0.175 / 1M tokens | [GPT-5.2](https://platform.openai.com/docs/models/gpt-5.2) |
| `openai/gpt-5.1` | \$1.25 / 1M tokens | \$10 / 1M tokens | \$0.125 / 1M tokens | [GPT-5.1](https://platform.openai.com/docs/models/gpt-5.1) |
| `openai/gpt-5-mini` | \$0.25 / 1M tokens | \$2 / 1M tokens | \$0.025 / 1M tokens | [GPT-5 Mini](https://platform.openai.com/docs/models/gpt-5-mini) |
| **Google Models** | | | | |
| `google/gemini-3.1-pro-preview` | \$2.00 / 1M tokens (≤200k context)
\$4.00 / 1M tokens (>200k context) | \$12.00 / 1M tokens (≤200k context)
\$18.00 / 1M tokens (>200k context) | 90% discount | [Gemini 3.1 Pro](https://ai.google.dev/gemini-api/docs/models#gemini-3.1-pro-preview) |
| `google/gemini-3-pro-preview` | \$2.00 / 1M tokens (≤200k context)
\$4.00 / 1M tokens (>200k context) | \$12.00 / 1M tokens (≤200k context)
\$18.00 / 1M tokens (>200k context) | 90% discount | [Gemini 3.0 Pro](https://ai.google.dev/gemini-api/docs/models#gemini-3-pro-preview) |
| `google/gemini-3-flash-preview` | \$0.50 / 1M tokens | \$3.00 / 1M tokens | 90% discount | [Gemini 3.0 Flash](https://ai.google.dev/gemini-api/docs/models#gemini-3-flash-preview) |
| `google/gemini-2.5-pro` | \$1.25 / 1M tokens (≤200k context)
\$2.50 / 1M tokens (>200k context) | \$10.00 / 1M tokens (≤200k context)
\$15.00 / 1M tokens (>200k context) | 90% discount | [Gemini 2.5 Pro](https://ai.google.dev/gemini-api/docs/models#gemini-2.5-pro_1) |
| `google/gemini-2.5-flash` | \$0.30 / 1M tokens | \$2.50 / 1M tokens | 90% discount | [Gemini 2.5 Flash](https://ai.google.dev/gemini-api/docs/models#gemini-2.5-flash_1) |
| **xAI Models** | | | | |
| `xai/grok-4-1-fast-non-reasoning` | \$0.20 / 1M tokens | \$0.50 / 1M tokens | \$0.05 / 1M tokens | [Grok 4.1](https://docs.x.ai/docs/models/grok-4-1-fast-non-reasoning) |
**See Your Costs in Real-Time:** Every response includes a `usage` field with exact input tokens, output tokens, and cache read tokens. Calculate your cost instantly using the pricing table above.
Example response:
```json theme={null}
{
"usage": {
"input_tokens": 150,
"output_tokens": 320,
"total_tokens": 470
}
}
```
## Configuration Options
The Agent API supports two ways to configure models:
1. [**Presets**](/docs/agent-api/presets): Pre-configured model setups optimized for specific use cases.
2. [**Models**](/docs/agent-api/models): Direct model selection, including third-party models
## Model Fallback
For high-availability applications, you can specify multiple models in a fallback chain. When one model fails or is unavailable, the API automatically tries the next model in the chain.
Learn how to use model fallback chains to ensure high availability and reliability by automatically trying multiple models when one fails.
**Example:**
```python theme={null}
response = client.responses.create(
models=["openai/gpt-5.2", "openai/gpt-5.1", "openai/gpt-5-mini"],
input="Your question here"
)
```
For detailed examples, pricing information, and best practices, see the [Model Fallback documentation](/docs/agent-api/model-fallback).
## Next Steps
Learn how to use model fallback chains for higher availability.
Explore available presets and their configurations.
Get started with your first Agent API call.
View complete endpoint documentation.