> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lectr.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported Models & Providers

> Every provider and model Lectr knows about.

## Providers

| Provider      | Detection                 | Endpoint                                                  |
| ------------- | ------------------------- | --------------------------------------------------------- |
| OpenAI        | Automatic                 | `https://api.openai.com`                                  |
| Anthropic     | Automatic                 | `https://api.anthropic.com`                               |
| Groq          | Automatic                 | `https://api.groq.com/openai`                             |
| Google Gemini | Automatic                 | `https://generativelanguage.googleapis.com/v1beta/openai` |
| Azure OpenAI  | `X-Lectr-Provider: azure` | Per-org — configured in dashboard                         |

All providers use the same proxy endpoint: `https://proxy.lectr.ai/v1`

***

## OpenAI

| Model           | Routing target | Recommendations            |
| --------------- | -------------- | -------------------------- |
| `gpt-4o`        | ✅              | Downgrade → `gpt-4o-mini`  |
| `gpt-4o-mini`   | ✅              | —                          |
| `gpt-4-turbo`   | ✅              | Downgrade → `gpt-4o`       |
| `gpt-4`         | ✅              | Downgrade → `gpt-4o`       |
| `gpt-4.1`       | ✅              | Downgrade → `gpt-4.1-mini` |
| `gpt-4.1-mini`  | ✅              | Downgrade → `gpt-4.1-nano` |
| `gpt-4.1-nano`  | ✅              | —                          |
| `gpt-3.5-turbo` | ✅              | Downgrade → `gpt-4.1-nano` |
| `o1`            | ✅              | Downgrade → `o1-mini`      |
| `o1-mini`       | ✅              | Downgrade → `gpt-4o`       |
| `o3`            | ✅              | Downgrade → `o3-mini`      |
| `o3-mini`       | ✅              | Downgrade → `gpt-4o-mini`  |
| `o4-mini`       | ✅              | Downgrade → `gpt-4o-mini`  |

***

## Anthropic

| Model                        | Routing target | Recommendations                                                                                     |
| ---------------------------- | -------------- | --------------------------------------------------------------------------------------------------- |
| `claude-3-opus-20240229`     | ✅              | Downgrade → `claude-3-5-sonnet-20241022` (conservative) or `claude-3-5-haiku-20241022` (aggressive) |
| `claude-3-5-sonnet-20241022` | ✅              | Downgrade → `claude-3-5-haiku-20241022`                                                             |
| `claude-3-sonnet-20240229`   | ✅              | Downgrade → `claude-3-5-haiku-20241022`                                                             |
| `claude-3-5-haiku-20241022`  | ✅              | —                                                                                                   |
| `claude-3-haiku-20240307`    | ✅              | —                                                                                                   |

<Note>
  Anthropic model names include a date suffix (e.g. `20241022`). Lectr also uses
  prefix matching — new Claude models are detected automatically even if not yet
  in this list.
</Note>

***

## Groq

| Model                     | Routing target | Recommendations                       |
| ------------------------- | -------------- | ------------------------------------- |
| `llama-3.2-90b-vision`    | ✅              | Downgrade → `llama-3.1-70b-versatile` |
| `llama-3.1-70b-versatile` | ✅              | Downgrade → `llama-3.1-8b-instant`    |
| `llama-3.1-8b-instant`    | ✅              | —                                     |
| `mixtral-8x7b-32768`      | ✅              | Downgrade → `llama-3.1-8b-instant`    |
| `gemma2-9b-it`            | ✅              | Downgrade → `llama-3.1-8b-instant`    |

***

## Google Gemini

| Model              | Routing target | Recommendations                |
| ------------------ | -------------- | ------------------------------ |
| `gemini-1.5-pro`   | ✅              | Downgrade → `gemini-1.5-flash` |
| `gemini-1.5-flash` | ✅              | —                              |
| `gemini-2.0-flash` | ✅              | Downgrade → `gemini-1.5-flash` |

***

## Azure OpenAI

Azure uses deployment names as model identifiers — these are org-specific and
not in the detection registry. Always use `X-Lectr-Provider: azure` and configure
your endpoint in the dashboard.

See [Multi-Provider Setup → Azure](/guides/multi-provider-setup#azure-openai) for setup instructions.

***

## Model not listed?

Lectr uses prefix matching as a fallback — so new model versions from known
providers are usually detected correctly even before this list is updated.

If a model isn't detected:

* Use `X-Lectr-Provider` to set the provider manually
* The request goes through — detection failure never blocks traffic
* Cost tracking shows `$0.00 (pricing unavailable)` until the model is added

Model list and pricing are updated regularly. If you're missing a model you
use in production, let us know.

***

## Routing targets

The "Routing target" column indicates whether a model can be used as the
destination in a routing rule. All listed models are valid routing targets.
Routing rules are coming in a future release.

***

## Recommendation aggressiveness

Recommendations stay within provider — Lectr won't suggest switching from
Anthropic to OpenAI. Within a provider, the downgrade aggressiveness depends
on task type:

| Task type        | Aggressiveness                                         |
| ---------------- | ------------------------------------------------------ |
| `classification` | Aggressive — smallest viable model                     |
| `extraction`     | Aggressive (short prompts) / Moderate (long prompts)   |
| `summarisation`  | Moderate (short prompts) / Conservative (long prompts) |
| `generation`     | Conservative — relies on other signals                 |
| `reasoning`      | Never recommended for downgrade                        |

See [Task Types](/guides/task-types) for how to tag your requests.