# SuperCosmos 1.0

> The previous version of SuperCosmos: 550B parameters (55B active), a 1M-token window and three tiers, Flash, Max and Heavy. SuperCosmos 1.1 replaced it on Nov 2, 2026.

**SuperCosmos 1.0** (Previous version): The model family behind every Clatter Labs product, tuned for coding-agent work. Where: All products. Efforts: Flash, Max, Heavy (Fast, Strong, Deliberate). Size: 550B (55B active). Context window: 1M tokens. From $1.60 in · $3.40 out. Input: Text.


<Note>
SuperCosmos 1.0 is the previous version of SuperCosmos. Since Nov 2, 2026 the model ids `supercosmos-flash`, `supercosmos-max` and `supercosmos-heavy` run **SuperCosmos 1.1**, at the same prices. See [SuperCosmos 1.1](/models/overview).
</Note>

**SuperCosmos 1.0** was the first version of SuperCosmos by Clatter Labs, the model family behind every Clatter Labs product. It is a 550B-parameter mixture-of-experts model (55B active per token) with a 1M-token context window (1,048,576 tokens), and it comes in three tiers that share those weights and that window, each tuned with its own instructions for coding-agent work: look before changing, use tools carefully, plan bigger jobs, verify before reporting, answer briefly.

- **Flash** (Fast): $1.60 input / $3.40 output per 1M tokens. Quick edits, answers and everyday agent steps. No extended thinking.
- **Max** (Strong): $1.80 input / $3.80 output per 1M tokens. Planning, debugging and multi-file changes. Thinks before acting.
- **Heavy** (Deliberate): $2.00 input / $4.40 output per 1M tokens. Hard bugs, long builds, deep reasoning. Thinks longest.

## Compare tiers

| | Flash | Max | Heavy |
| --- | --- | --- | --- |
| Model id | `supercosmos-flash` | `supercosmos-max` | `supercosmos-heavy` |
| Speed | Fastest | Balanced | Slowest |
| Extended thinking | Off | On | On, longest |
| Parameters | 550B (55B active) | 550B (55B active) | 550B (55B active) |
| Context window | 1M tokens | 1M tokens | 1M tokens |
| Input / 1M tokens | $1.60 | $1.80 | $2.00 |
| Output / 1M tokens | $3.40 | $3.80 | $4.40 |
| Long-context input (above 262K tokens) | 1.5× | 1.5× | 1.5× |

Output prices include reasoning tokens.

## Where you choose a tier

| Product | How |
| --- | --- |
| Agent API | `tier` on `POST /v1/runs`: `auto`, `flash`, `max`, `heavy` |
| Model API | The model id: `supercosmos-flash`, `supercosmos-max` or `supercosmos-heavy` ([Model API](/model-api/overview)) |
| Line CLI | `/model` → **SuperCosmos**, then `/effort flash`, `max` or `heavy` (or `auto`, which routes between Flash and Max per step) |

With `auto`, each call is routed and **billed at the tier it actually ran on**. Agent API runs on `auto` bill as Flash.

In Line CLI the tiers are called **efforts** of the SuperCosmos model (Flash, Max, Heavy); prices are the same.

## Line Code

Alongside SuperCosmos 1.0, Line CLI and the [Model API](/model-api/overview) offered **[Line Code](/models/line-code)**, Clatter Labs' coding model (retired Nov 1, 2026): efforts **Fast** ($1.15 / $1.60), **Ultra** ($1.25 / $1.90) and **Ultra Fast** ($1.40 / $2.20) per 1M input / output tokens. Current prices are on [Models](/models).

<Note>
SuperCosmos reads text. It doesn't take image input.
</Note>