Run prisma--claude-fable-5-1--v5-f--2026-09-06 · self-test: the subject is the operator
The Fable 5.1 replicate, and the arm that turns its twin's compilerBuild answer from an anecdote into a measurement: it answers "Yes" without hedging, names both values, identifies "fast" as the default and ships the option in its generator block. Two independent draws of one subject producing a 7.3.0 option is not a lucky guess. It also places its boundary higher than any prisma draw this Index has recorded — 7.2.0 describable, 7.3.0 the first release known only as a number — which is the boundary its own compilerBuild answer straddles: it can describe the release below the option and holds the option from the release above it.
| Subject | Claude Fable 5.1 claude-fable-5-1, Anthropic |
|---|---|
| Invoked as | Agent tool, model alias "fable"; prompt sent verbatim from prompts/sent/prisma-v5.txt. The replicate of the Fable 5.1 pair, declared non-charging in the spec before spawning. Same alias and same identity probe as `v5-e`. |
| Cutoff the model states | 2026-06 |
| Newest prisma release it could place | 7.2.0 · 2025-12-17 (~6 month lag) |
| Oldest prisma release it could not place | 7.3.0 · 2026-01-21 (so this run brackets the subject’s boundary to 2025-12-17 – 2026-01-21) |
| In its own words | "The latest line I know of is Prisma 7.x. The most recent release whose contents I can genuinely describe is roughly Prisma 7.2, from around January 2026." |
| Library at test time | prisma 7.10.0 (npm), verified 2026-09-06 |
| Battery | prisma/v5-f · 5 tasks, 3 direct questions · probe window 7.2.0 to 7.3.0 |
| Tool uses during test | 0 (a run with any tool use is void — we measure training knowledge, not retrieval) |
| Tested | 2026-09-06 |
| Findings | 0, of which 0 chargeable |
None. Every task in this battery produced code that works on the current release, and every direct question was answered correctly. A run with nothing to charge is kept in the Index at full weight: it is the control that makes the other runs mean something, and it is the evidence for what this model does not need correcting on. What the subject actually said is recorded below.
Recorded so the run cannot be read as a hit list. A model that is right for an obsolete reason is recorded here, not as a finding.
| Kind | API | Note |
|---|---|---|
| miss | prisma db push --url |
Denies --url on db push and the migrate commands, at "moderate confidence", and names db pull --url, db execute --url and migrate diff --from-url as the real ones. (Reproduced but not charged: this is the replicate arm of its pair, and only the arm nominated in prompts/prisma.md § v5 before spawning may charge.) [chargeable miss — a replicate, a duplicated arm’s second draw or a below-floor control charges nothing;
charged as a finding on prisma--claude-fable-5-1--v5-e--2026-09-06] |
| miss | @prisma/sqlcommenter-query-insights |
Denies the first-party SQLCommenter plugin: "Prisma ships no SQLCommenter package or plugin ... Google's sqlcommenter project has adapters for Knex, Sequelize and pg, but nothing for Prisma." (Reproduced but not charged: this is the replicate arm of its pair, and only the arm nominated in prompts/prisma.md § v5 before spawning may charge.) [chargeable miss — a replicate, a duplicated arm’s second draw or a below-floor control charges nothing;
charged as a finding on prisma--claude-fable-5-1--v5-e--2026-09-06] |
| correct | compilerBuild |
Answered TASK 3 "Yes" and described compilerBuild correctly — two builds of the WASM query compiler, values "fast" (default) and "small", associated with the serverless/edge bundle-size story — then used it in the generator block it shipped. (Correct, and stronger than its twin: an unhedged "Yes" with the default value identified. Both Fable 5.1 arms independently produced this option, which rules out a single lucky draw and makes the pass a property of the subject rather than of the sample.) |
Battery specification: prompts/prisma.md in the studio repo.
Every finding above also carries its own citation.