Work in a Large Existing Codebase
Best when you need repository comprehension, constraint retention, careful edits, and verification — not the fastest chat reply. Optimised for mature codebases where understanding local patterns matters more than greenfield flair.
Fit score ≠ absolute IQ
- Fit score is a weighted blend of this Quest’s attribute/skill weights (and optional cost/tempo soft prefs). Higher = better match for this job among scored Builds.
- Attribute inputs are peer-public scores (roughly 40–95 within the current peer set). A low STR here can still be a strong absolute model — it just ranks lower among current scored peers on that axis.
- Decisive means the leader is ≥4 fit points ahead of #2. Smaller gaps → pick on price, Party stack, or taste.
Peer set today: 6 scored Builds. Adding another re-ranks peers — re-run the engine after new evidence.
Best fit
Decisive lead on weighted fit. Strongest blend on STR + CON. OpenAI flagship Build for autonomous coding and professional workflows when ecosystem tools and max reasoning justify $5/$30.
Struggle · WIS · Judgment is a relative soft spot (40 peer public)
Suggested multi-model stack
Most jobs want a Party — not one model forever. Primary handles the Quest; ceiling covers hard escalations; value handles volume and drafts.
Decisive Quest Fit lead — default seat for this job.
Peer INT 85 — escalate hard reasoning or research here.
Cheapest list stack among remaining candidates ($0.435/$0.87) for volume or drafts.
What we weight
Relative importance of each input in the Fit formula.
- Min context ≥ 64,000 tokens
- Prefer builds with strong verification habits over pure speed.
Contribution breakdown
Peer-public input × Quest weight. Bars show weight mass; numbers show the score fed into Fit.
All scored candidates
Decisive lead on weighted fit. Strongest blend on STR + CON. OpenAI flagship Build for autonomous coding and professional workflows when ecosystem tools and max reasoning justify $5/$30.
Struggle · WIS · Judgment is a relative soft spot (40 peer public)
8.7 fit points behind GPT-5.6 Sol · API · Max effort. Still solid where STR / CON matter. The job is hard enough that a wrong answer costs more than Opus tokens.
Struggle · Everyday chat and low-stakes drafts (use Sonnet/Flash)
16.9 fit points behind GPT-5.6 Sol · API · Max effort. Still solid where STR / CON matter. You want near-frontier coding and agentic work with strong price and speed.
Struggle · EU-only deployments until regional GA
22.0 fit points behind GPT-5.6 Sol · API · Max effort. Still solid where STR / CON matter. The quest is research, multimodal, or long-context — not pure SWE ceiling at any price.
Struggle · CON · Reliability is a relative soft spot (42 peer public)
34.9 fit points behind GPT-5.6 Sol · API · Max effort. Still solid where STR / CON matter. You want open-frontier capability at roughly an order of magnitude below Sol/Opus list prices.
Struggle · CON · Reliability is a relative soft spot (40 peer public)
40.8 fit points behind GPT-5.6 Sol · API · Max effort. Still solid where STR / CON matter. You want one primary Build for coding and writing that stays pleasant under human supervision, holds constraints, and rarely needs the top-tier price.
Struggle · STR · Execution is a relative soft spot (40 peer public)
Capability snapshot
Peer public ranks feed Fit; raw aggregates stay absolute evidence fusion. Full sheet: Codex →
What matters most
- Constraint retention across long sessions
- Careful edits in unfamiliar modules
- Tests and verification before claiming done
Common failure modes
- Overengineering simple fixes
- Context drift on multi-hour tasks
- Premature victory without running checks