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

# Available Models

> Every model the Belvedir router can serve, with the identifier to use in your calls and routing configs.

These are the models the [router inference endpoint](/api-reference/route) can execute, with the identifier you pass as `model` (or pick in a routing config on the Routing page). Per-token prices for all of them live on the platform's Pricing page (**Inference → Pricing**); prices are not repeated here so they can't go stale.

## Identifier spelling

Belvedir uses provider-prefixed identifiers for every provider except OpenAI, whose bare `gpt-*` ids are the convention. Bare ids from provider-native SDKs are normalized server-side (`claude-sonnet-5` → `anthropic/claude-sonnet-5`, `grok-4.6` → `x-ai/grok-4.6`, `gemini-*` → `google/*`, `mistral-*` → `mistralai/*`, `deepseek-*` → `deepseek/*`), so a call site migrated from another SDK keeps working with the id it already names.

## Anthropic

Served directly on Anthropic's API.

| Model             | Identifier                    |
| ----------------- | ----------------------------- |
| Claude Fable 5    | `anthropic/claude-fable-5`    |
| Claude Opus 5     | `anthropic/claude-opus-5`     |
| Claude Opus 4.8   | `anthropic/claude-opus-4-8`   |
| Claude Opus 4.7   | `anthropic/claude-opus-4-7`   |
| Claude Opus 4.6   | `anthropic/claude-opus-4-6`   |
| Claude Sonnet 5   | `anthropic/claude-sonnet-5`   |
| Claude Sonnet 4.6 | `anthropic/claude-sonnet-4-6` |
| Claude Haiku 4.5  | `anthropic/claude-haiku-4-5`  |
| Claude Opus 4.5   | `anthropic/claude-opus-4-5`   |
| Claude Sonnet 4.5 | `anthropic/claude-sonnet-4-5` |

That is every model Anthropic's API serves; dated snapshot ids (`claude-opus-4-5-20251101`, ...) resolve to the same rates.

## OpenAI

Served directly on OpenAI's API. Bare ids are the norm; the `openai/` prefix is also accepted. Any current OpenAI chat id (`gpt-*`, `chatgpt-*`, o-series) routes here; the priced line-up:

| Model         | Identifier      |
| ------------- | --------------- |
| GPT-5.6 Sol   | `gpt-5.6-sol`   |
| GPT-5.6 Terra | `gpt-5.6-terra` |
| GPT-5.6 Luna  | `gpt-5.6-luna`  |
| GPT-5.2       | `gpt-5.2`       |
| GPT-5         | `gpt-5`         |
| GPT-5 mini    | `gpt-5-mini`    |
| GPT-5 nano    | `gpt-5-nano`    |
| GPT-4.1       | `gpt-4.1`       |
| GPT-4.1 mini  | `gpt-4.1-mini`  |
| GPT-4.1 nano  | `gpt-4.1-nano`  |
| GPT-4o        | `gpt-4o`        |
| GPT-4o mini   | `gpt-4o-mini`   |
| GPT-5.5       | `gpt-5.5`       |
| GPT-5.4       | `gpt-5.4`       |
| GPT-5.4 mini  | `gpt-5.4-mini`  |
| GPT-5.4 nano  | `gpt-5.4-nano`  |
| GPT-5.1       | `gpt-5.1`       |
| o1            | `o1`            |
| o3            | `o3`            |
| o3 mini       | `o3-mini`       |
| o4 mini       | `o4-mini`       |
| GPT-4 Turbo   | `gpt-4-turbo`   |
| GPT-4         | `gpt-4`         |
| GPT-3.5 Turbo | `gpt-3.5-turbo` |

That is every callable chat model OpenAI's API serves, at OpenAI's list prices; dated snapshot ids resolve to the same rates. OpenAI's pro and codex models are served only on their Responses API, which the router doesn't speak, and the versioned chat-latest ids are deprecated on OpenAI's side; both return a clear error naming the base model to use instead.

## xAI

Served through OpenRouter, priced from the provider's reported cost per call.

| Model    | Identifier      |
| -------- | --------------- |
| Grok 4.6 | `x-ai/grok-4.6` |

## Open models

| Model                  | Identifier                          | Served on                        |
| ---------------------- | ----------------------------------- | -------------------------------- |
| GLM 5.2                | `zai-org/GLM-5.2-FP8`               | Sail Research (American compute) |
| Kimi K2.6              | `moonshotai/Kimi-K2.6`              | Sail Research (American compute) |
| DeepSeek V4 Flash      | `deepseek/deepseek-v4-flash-0731`   | Sail Research (American compute) |
| gpt-oss 120B           | `openai/gpt-oss-120b`               | Sail Research (American compute) |
| Gemma 4 31B            | `google/gemma-4-31B-it`             | Sail Research (American compute) |
| Gemma 4 31B NVFP4      | `nvidia/Gemma-4-31B-IT-NVFP4`       | Sail Research (American compute) |
| Qwen 3.5 9B            | `Qwen/Qwen3.5-9B`                   | OpenRouter                       |
| Llama 3.3 70B Instruct | `meta-llama/Llama-3.3-70B-Instruct` | OpenRouter                       |
| Llama 3.2 3B Instruct  | `meta-llama/Llama-3.2-3B-Instruct`  | OpenRouter                       |

Beyond this list, **any OpenRouter model id** works as a pass-through: the call executes on OpenRouter and bills at OpenRouter's reported cost for that call.

If your organization has **Chinese models** turned off under Project Permissions, Chinese-lab identifiers (Qwen, GLM, DeepSeek, Kimi) are unavailable for that project: the router never picks one, and a call naming one returns a clear error.

## Batch tier

Models served on Anthropic, OpenAI, and Sail also have a deferred [batch tier](/api-reference/route) at half of list price. OpenRouter-served models have no batch tier.

## Your own models

* **Local models** (Ollama-style `name:tag` ids such as `qwen3:4b`, `llama3.1:8b`, `gpt-oss:20b`): the [decision endpoint](/api-reference/route) can route to them, but your app executes the call; the inference endpoint returns a clear `400` for them.
* **Fine-tuned models** (your project's trained models, by name): same rule; the decision endpoint routes to them and your app serves them.
* **Bring your own provider**: register a model id with your own base URL and key under **Cloud Inference** in the dashboard, and the inference endpoint executes that id on your endpoint instead — metered but never billed. This lifts the `400` for local and fine-tuned ids too.