swe bench pro system card 2026 06 Benchmark: Scores and Sources
Published result; benchmark version and evaluation conditions remain in the id and result note.
| Row | Model | Result | Normalized (0–100) | Confidence |
|---|---|---|---|---|
| 1 | Claude Mythos 5 Anthropic | 80.3%Anthropic Mythos 5 system-card claimsLab claim, not an independent evaluation. System-card variant; public/private split unspecified, kept separate from the public steward board; June 9 release card, section 8; immutable edition [variant] Mythos 5 system cardPublished Jun 9, 2026
Retrieved Oct 9, 2026 · factual citation Open source ↗ | 80.3 | 5% confidence 5 percent, Low |
Results are as published by the source behind each value (hover or tap the number). Benchmark scores are shown individually for every source/variant (a model may have multiple rows), and vary by version, harness and date; the normalized column uses the method’s fixed 0–100 scales and feeds the coding pillar of the SI Score.