> ## Documentation Index
> Fetch the complete documentation index at: https://summer-18f03259-codex-native-multiplayer-entry.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Which AI models does Summer use?

> Summer routes across many providers. The model selector is the live list; asset generation picks its own backends.

Summer Engine runs on many providers rather than one. Which one handles a given
request depends on what you asked for and what you picked in the model selector.

### The chat agent

The agent that writes your code and drives the editor is whatever model is selected
in the chat composer.

* **Auto** (the default, on every plan) routes to a fast long-context coding model
  chosen for the balance of quality, cost, and reliability. The specific model
  changes as we improve the routing.
* **MAX** (paid plans) routes to a frontier model and maxes out context and tool
  calls, billed at the API pricing of whatever it selects.
* **Picking a model yourself** gives you a specific model from OpenAI, Anthropic,
  DeepSeek, GLM, Kimi, Grok, or Qwen.

The model selector is the live list. It is rendered from the running catalog and it
tells you each model's context window and cost warning. See
[Models](/auto-mode/models) for how selection and plan access work.

### Asset generation

Asset generation does not use the chat model. Each asset type has its own backends,
and Summer picks one based on the job:

| Asset         | How it is generated                                                                                                                                             |
| ------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Images**    | Several hosted image models — currently Nano Banana, Seedream, Grok Imagine, GPT Image, and Gemini Flash Image, plus FLUX.2 behind the dedicated pixel-art tab. |
| **3D models** | Meshy, Rodin, Tripo, Hunyuan, and Trellis, covering text-to-3D, image-to-3D, and multi-view, plus rigging and animation.                                        |
| **Audio**     | ElevenLabs, for voice, dialogue, sound effects, and music.                                                                                                      |
| **Video**     | Veo, Kling, Seedance, and Gemini Omni Flash, for cutscenes and image-to-video.                                                                                  |

In Summer Studio you choose the backend yourself from a picker that shows each
model's price. In chat, the agent picks one for the job. Prices differ by orders of
magnitude — an image costs cents, a textured 3D model can cost most of a dollar —
which is why the picker shows the cost next to every model.

### Choosing models

You choose the chat model in the selector next to the composer. Asset backends are
chosen per generation inside Summer Studio, where the model list and its prices are
shown live.

Summer does not accept your own provider API keys for hosted generation — hosted AI
runs on your plan's usage. If you want to run your own model against your project,
use the [MCP server](/mcp/overview) instead: point Cursor, Claude Code, or any other
harness at Summer and drive the editor with whatever model you already pay for.

**Staying Current**: When new AI models are released, Summer typically integrates them within 24 hours to ensure you always have access to the latest capabilities.