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fix(docs): the alias targets and effort defaults match the docs today (green)

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Verified 2026-10-02 against code.claude.com/docs/en/model-config and
/sub-agents. On the Anthropic API opus -> Opus 5.5 and sonnet ->
Sonnet 5.5 (default effort medium), fable -> Fable 5.1 (default high).
Three more claims in the same section were false and are corrected:
an agent without effort: inherits the session level, not the model
default; MAX_THINKING_TOKENS=0 has no effect on Opus 5.5, Sonnet 5.5
or Fable; effort is capped by maxEffortLevel or an organization cap.
"Mythos-class" is replaced by the docs' own wording. History is
untouched (CHANGELOG, the measurement docs, the Path C line).

STATE said seven files but listed six; the red pin found exactly
these six. The end-state registry line names a CC changelog fact and
stays as history.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Kjell Tore Guttormsen 2026-10-02 21:43:51 +02:00
commit e4e37f91ef
Signed by: ktg
SSH key fingerprint: SHA256:JakMjO6FTBBzN0Bhfj9saOoEjaFxlSdYuZQQpM/lF9Q
6 changed files with 33 additions and 28 deletions
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6
README.md
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@ -776,7 +776,7 @@ Four built-in model profiles plus operator-defined `<custom>.yaml` (drop in `lib
| `economy` | sonnet | sonnet | sonnet | sonnet | sonnet | sonnet | ⚠ **Experimental** (uncalibrated Jaccard floor) — lowest cost; high-confidence small-scope tasks (opt-in via `--profile economy`) |
| `balanced` | sonnet | sonnet | opus | sonnet | opus | sonnet | Mixed — opus where reasoning depth pays off (opt-in via `--profile balanced`) |
| `premium` (default) | opus | opus | opus | opus | opus | opus | Maximum quality — Opus on every phase (default since the 2026-05-13 operator decision) |
| `fable` | fable | fable | fable | fable | fable | fable | Max quality — Fable 5 (Mythos-class, above Opus) on every phase (opt-in via `--profile fable`); reasoning effort inherits from the session |
| `fable` | fable | fable | fable | fable | fable | fable | Max quality — Fable 5.1 (the most capable model in Claude Code) on every phase (opt-in via `--profile fable`); reasoning effort inherits from the session |
Lookup order:
@ -801,9 +801,9 @@ Default JSONL stats stream (`${CLAUDE_PLUGIN_DATA}/trek*-stats.jsonl`) is unchan
## Cost profile
The default `premium` profile runs **Opus on every phase** of the pipeline's agent work — the exploration and review swarms (5–10 sub-agents per command; spawn sites inject the composed brief > profile > frontmatter resolution, with `agents/*.md` `model: opus` pins as the fallback) and the executor (one per plan session). The command orchestrator itself is not profile-controlled: as of v5.9, command frontmatter omits `model:`, so the orchestrator follows the session model. For cheaper runs, opt into `--profile balanced` (Sonnet on brief/research/execute/continue, Opus on plan + review) or `--profile economy` (Sonnet everywhere); for maximum quality, `--profile fable` (Fable 5 on every phase). Per-command cost is published in `${CLAUDE_PLUGIN_DATA}/trek*-stats.jsonl` if you want exact numbers.
The default `premium` profile runs **Opus on every phase** of the pipeline's agent work — the exploration and review swarms (5–10 sub-agents per command; spawn sites inject the composed brief > profile > frontmatter resolution, with `agents/*.md` `model: opus` pins as the fallback) and the executor (one per plan session). The command orchestrator itself is not profile-controlled: as of v5.9, command frontmatter omits `model:`, so the orchestrator follows the session model. For cheaper runs, opt into `--profile balanced` (Sonnet on brief/research/execute/continue, Opus on plan + review) or `--profile economy` (Sonnet everywhere); for maximum quality, `--profile fable` (Fable 5.1 on every phase). Per-command cost is published in `${CLAUDE_PLUGIN_DATA}/trek*-stats.jsonl` if you want exact numbers.
The `opus` alias resolves to **Opus 4.8** (default reasoning effort `high`), `sonnet` to Sonnet 4.6, and `fable` to **Fable 5** (Mythos-class, above Opus; default reasoning effort `high` — xhigh requires a session-level setting, see [`docs/profiles.md`](docs/profiles.md)). Note two distinct effort axes that share the word "effort": brief `phase_signals.effort` (low/standard/high) tunes *orchestration shape* — how many agents and passes run — while native `effort:` on selected agents (retrieval at `medium`, adversarial-reasoning at `high`) tunes the *per-spawn reasoning budget*. See [`docs/profiles.md`](docs/profiles.md) § Model & effort axes.
On the Anthropic API the `opus` alias resolves to **Opus 5.5** and `sonnet` to **Sonnet 5.5** (both default to reasoning effort `medium`), and `fable` to **Fable 5.1** (the most capable model in Claude Code; default reasoning effort `high` — xhigh must be chosen explicitly, see [`docs/profiles.md`](docs/profiles.md)). Other providers resolve `opus` and `sonnet` to other versions. Note two distinct effort axes that share the word "effort": brief `phase_signals.effort` (low/standard/high) tunes *orchestration shape* — how many agents and passes run — while native `effort:` on selected agents (retrieval at `medium`, adversarial-reasoning at `high`) tunes the *per-spawn reasoning budget*. See [`docs/profiles.md`](docs/profiles.md) § Model & effort axes.
For per-profile cost estimates, see [`docs/profiles.md`](docs/profiles.md).