Best LLMs for SEC Filling Analysis — DTP Benchmark
Models
Frontier on this task: GPT-5.5 at 8.47 / 10. Quality bar at 95%: 8.05.
point-estimate floor (CI low) · upper CI (less certain) · Bars sorted by blended cost; cheapest qualifier first. Greyed rows are MEDIUM+ models whose point estimate clears the bar but whose CI low does not.
Cost breakdown
| Model | Quality | Sample | Blended cost / call | Savings vs best | Mode |
|---|---|---|---|---|---|
| GPT-5.5 best OpenAI | 8.47 / 10 CI [8.30, 8.65] | n=100 · ranked | $0.075315 | (anchor) | batch |
Typical call shape for this task: 4242 input tokens → 4314 output tokens, EMA-tracked from production traffic. Blended cost = (in × in_price + out × out_price), rounded to 6 decimals.