{
 "columns": [
  "Stage",
  "Leanstral 1.5 (reported)",
  "Our 8B / 4x A10G analogue",
  "Data (see Datasets)",
  "Gate to advance",
  "Box-hours",
  "Source",
  "Confidence",
  "Status"
 ],
 "widths": [
  16,
  46,
  46,
  34,
  34,
  12,
  40,
  10,
  14
 ],
 "rows": [
  [
   "Base",
   "Mistral Small 4: 119B MoE, 128 routed + 1 shared expert, top-4, ~6B active, 36 layers, MLA",
   "Goedel-Prover-V2-8B (dense Qwen3-8B derivative) - already Lean-trained",
   "-",
   "Reproduce published baseline",
   "~12",
   "interim-report-leanstral-base-midtraining-and-compute-provenance",
   "High",
   "Done (82.8% pass@32)"
  ],
  [
   "Mid-training",
   "6.5B dedup Lean tokens + code-agent / instruction data; ratios unreported",
   "Skipped: base is already Lean-specialised; 6.5B tokens ~24 days here",
   "Datasets: S1",
   "-",
   "~575",
   "interim-report-leanstral-base-midtraining-and-compute-provenance",
   "High",
   "Out of scope"
  ],
  [
   "SFT",
   "50% Lean code-agent traces, failure-mode filtered; teachers unreported",
   "Iterated verifier-filtered self-distillation (LoRA) on band problems + compiler-error correction pairs",
   "Datasets: S2a, S2b; own pool rounds",
   "valid pass@8 gain >= noise; no regression",
   "~55 per round",
   "interim-report-data-vs-rl-lever-and-8b-4xa10g-reproducibility",
   "Med",
   "Queued"
  ],
  [
   "Prompt filter",
   "Keep prompts with low-but-nonzero SFT solve rate (8 rollouts)",
   "Band (0, 0.75] from pool round n=8; ~11% of pool",
   "Pool round 0",
   "-",
   "~25",
   "in-this-work-we-present-leanstral-a-series-of-generalist-code-agent-models-for",
   "High",
   "Running"
  ],
  [
   "RL",
   "CISPO, loss -(1/sum|o|) sum sg(min(pi/pi_sample, c)) A log pi; c unreported; outcome broadcast to all tokens; tool/prompt tokens masked; mix 50% LeanGym-PR / 20% single theorem / 30% prove-or-disprove multi-turn",
   "Small on-policy LoRA CISPO, c~5, no lower clamp, neg-adv low-ratio sequence mask, 1-2 updates/rollout, single-turn + correction mode, <=40k ctx",
   "Datasets: S3",
   "paired valid gain; collapse tripwires",
   "~15",
   "interim-report-objective-choice-cispo-vs-grpo-effect-size-controlled",
   "Med",
   "Planned"
  ],
  [
   "Reward / verifier",
   "Format partial + compile with standard axioms only (#print axioms); native_decide banned; LeanInteract + modified SafeVerify",
   "Strict verifier (P1) + red-team fixes + OS sandbox; same verifier both arms",
   "Datasets: S4",
   "0 false accepts on adversarial suite",
   "-",
   "in-this-work-we-present-leanstral-a-series-of-generalist-code-agent-models-for",
   "High",
   "Running"
  ],
  [
   "Averaging",
   "Not in Leanstral report (Goedel-V2 item)",
   "alpha 0.6-0.9 between SFT round and RL/next round, chosen on valid",
   "-",
   "valid pass@32 restored",
   "~6",
   "interim-report-rl-adds-vs-sharpens-on-lean-passk",
   "Med",
   "Planned"
  ],
  [
   "FP32 LM head",
   "Not in Leanstral report (MiniMax-M1 item)",
   "Kept (cheap); expected ~0 gain on dense 8B",
   "-",
   "-",
   "0",
   "interim-report-objective-choice-cispo-vs-grpo-effect-size-controlled",
   "Med",
   "Done (implemented)"
  ],
  [
   "Scaffold",
   "Mistral Vibe agent; compaction every 200k by mistral-small; persistent files/lemmas",
   "Single-turn whole proof + bounded correction turns; 200k windows infeasible (~29 GB KV)",
   "-",
   "-",
   "-",
   "interim-report-multiturn-compiler-feedback-vs-singleturn-and-sampling",
   "Med",
   "Planned"
  ],
  [
   "Bug finding",
   "Aeneas Rust->Lean; generate properties; pass@4 prove + pass@4 negation; 30 turns; 57 repos -> 47 flagged -> 11 real -> 5 new",
   "Same pipeline on a small crate set after the prover is final",
   "Datasets: S5",
   "Manually confirmed bugs",
   "-",
   "in-this-work-we-present-leanstral-a-series-of-generalist-code-agent-models-for",
   "High",
   "Planned"
  ]
 ]
}