> ## Documentation Index
> Fetch the complete documentation index at: https://docs.macroscope.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Models & Pricing
> Pick the model behind a Check Run Agent, tune reasoning and effort, and see how usage is billed
Every [Check Run Agent](/check-run-agents) runs on a model you choose in its front matter. This page covers the available models, how `reasoning` and `effort` behave, per-model pricing, and how to keep costs down.
## Choosing a Model
Set `model:` in your front matter to choose which model powers the agent.
The default model is `claude-opus-4-6`.
If you omit `model:`, the agent uses the default (`claude-opus-4-6`). If you set `model:` to a value Macroscope doesn't recognize (or a deprecated one), the check run concludes NEUTRAL with a "model is not available on Macroscope" message — it does not fall back to a default.
| Model | Reasoning | Effort | Notes |
| --------------------------- | ----------------------------------- | --------------------------------- | ---------------------------------------------------------------------------------- |
| **Anthropic** | | | |
| `claude-opus-4-5` | `low` (default), `medium`, `high` | `low` (default), `medium`, `high` | Earlier Opus generation. Smaller context window — best for short, targeted checks. |
| `claude-opus-4-6` (default) | auto | `low` (default), `medium`, `high` | Strongest general-purpose option. Large context window. |
| `claude-opus-4-7` | auto | `low` (default), `medium`, `high` | Large context window. |
| `claude-opus-4-8` | auto | `low` (default), `medium`, `high` | Latest Opus. Large context window. |
| `claude-sonnet-4-5` | `low` (default), `medium`, `high` | `low` (default), `medium`, `high` | Faster than Opus. Smaller context window. |
| `claude-sonnet-4-6` | auto | `low` (default), `medium`, `high` | Faster than Opus, with a large context window. |
| `claude-sonnet-5` | auto | `low` (default), `medium`, `high` | Latest Sonnet. Faster than Opus, with a large context window. |
| `claude-fable-5` | auto | `low` (default), `medium`, `high` | Highest intelligence. Best for hard tasks. |
| **OpenAI** | | | |
| `gpt-5-2` | `low` (default), `medium`, `high` | — | Earlier GPT generation. |
| `gpt-5-4` | `low` (default), `medium`, `high` | — | More capable than 5.2. |
| `gpt-5-5` | `low` (default), `medium`, `high` | — | Previous flagship GPT. |
| `gpt-5-6-sol` | `low` (default), `medium`, `high` | — | Latest GPT. Frontier tier — highest quality. |
| `gpt-5-6-terra` | `low` (default), `medium`, `high` | — | Balanced price and quality. |
| `gpt-5-6-luna` | `low` (default), `medium`, `high` | — | Cost-optimized. |
| **Open source** (Beta) | | | |
| `kimi-k2-7-code` | always on | — | |
| `glm-5-2` | `off`, `high` (default), `xhigh` | — | Large context window. |
| `minimax-m3` | on by default; set `off` to disable | — | Large context window. |
| `qwen-3-7-plus` | on by default; set `off` to disable | — | Smaller context window. |
* **Default** = the value used when the field is omitted from front matter.
* **Effort** applies to Anthropic models only — GPT and open-source models ignore it (shown as `—`).
* Newer Anthropic models (Opus 4.6 / 4.7 / 4.8, Sonnet 4.6 / 5, Fable 5) set thinking automatically, so their `reasoning` field is ignored (shown as auto).
* `xhigh` is only supported by `glm-5-2`.
Open source models are in beta and served through a limited set of inference providers (e.g. Fireworks AI). While we expand the number of inference providers we support, capacity fluctuations from these providers (during heavy load times) mean that latency may occasionally be higher due to request queuing.
## Reasoning and Effort
* `reasoning` accepts `off | low | medium | high | xhigh`
* `effort` accepts `low | medium | high`
Which field applies depends on the model:
* **Anthropic** — `effort` always applies. `claude-opus-4-5` and `claude-sonnet-4-5` additionally honor `reasoning`, which maps to [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking#supported-models); newer Anthropic models set thinking automatically and ignore `reasoning`.
* **OpenAI and open source** — `reasoning` selects the thinking level; `effort` is ignored.
`xhigh` is supported only by `glm-5-2`. On any other model the run falls back to `low` and surfaces a warning on the check run details page.
For example:
```md theme={null}
---
title: Security Review
model: claude-opus-4-5
reasoning: high
effort: medium
---
Your instructions here.
```
## Pricing
Check Run Agents bill in credits based on the underlying model's token cost. Rates below are USD per 1M tokens. `claude-opus-4-6` is the default when no model is set.
| Model | Input | Output | Cached input |
| --------------------------- | ------- | ------- | ------------ |
| **Anthropic** | | | |
| `claude-opus-4-5` | \$5.00 | \$25.00 | \$0.50 |
| `claude-opus-4-6` (default) | \$5.00 | \$25.00 | \$0.50 |
| `claude-opus-4-7` | \$5.00 | \$25.00 | \$0.50 |
| `claude-opus-4-8` | \$5.00 | \$25.00 | \$0.50 |
| `claude-sonnet-4-5` | \$3.00 | \$15.00 | \$0.30 |
| `claude-sonnet-4-6` | \$3.00 | \$15.00 | \$0.30 |
| `claude-sonnet-5` | \$2.00 | \$10.00 | \$0.20 |
| `claude-fable-5` | \$10.00 | \$50.00 | \$1.00 |
| **OpenAI** | | | |
| `gpt-5-2` | \$1.75 | \$14.00 | \$0.18 |
| `gpt-5-4` | \$2.50 | \$15.00 | \$0.25 |
| `gpt-5-5` | \$5.00 | \$30.00 | \$0.50 |
| `gpt-5-6-sol` | \$5.00 | \$30.00 | \$0.50 |
| `gpt-5-6-terra` | \$2.50 | \$15.00 | \$0.25 |
| `gpt-5-6-luna` | \$1.00 | \$6.00 | \$0.10 |
| **Open source** (Beta) | | | |
| `kimi-k2-7-code` | \$0.95 | \$4.00 | \$0.19 |
| `glm-5-2` | \$1.40 | \$4.40 | \$0.14 |
| `minimax-m3` | \$0.30 | \$1.20 | \$0.06 |
| `qwen-3-7-plus` | \$0.40 | \$1.60 | \$0.08 |
All prices are USD per 1M tokens. Agent usage is billed in credits: **raw model cost + 5% markup**, then ÷ \$0.01 per credit (1 credit = \$0.01). `claude-sonnet-5` shows introductory pricing through **Aug 31, 2026** (standard afterward: \$3.00 / \$15.00 / \$0.30 per 1M).
## Managing Costs
To keep costs down: use `include`/`exclude` or [`.macroscope/ignore.md`](/bug-detection-and-fixes#macroscope-ignore) to scope to relevant files, prefer `full_diff` over `code_object`, and use lower `effort` for simple checks.
Cost information is available in two places:
* **Settings → Billing** — Admins can see a full cost breakdown across all Check Run Agents.
* **GitHub Check Run details page** — Shows the billed total for each individual run.