Step 3.7 Flash vs Trinity Large Thinking
Which is better for the money: Step 3.7 Flash by StepFun or Trinity Large Thinking by Arcee AI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-09-01.
Trade-off
Verdict
Depends on your budget
Step 3.7 Flash scores 12.2 points higher (30.9 vs 18.7) but costs 1.1× as much to run the benchmark ($320 vs $289; both mid-range class). Pick Step 3.7 Flash when the extra intelligence is worth the premium, otherwise Trinity Large Thinking.
| Metric | Step 3.7 Flash | Trinity Large Thinking | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 30.9 | 18.7 | −39.5% Trinity Large Thinking is 39.5% less intelligent |
| Total AA cost (lower is better) | $319.97 | $289.19 | −9.6% Trinity Large Thinking is 9.6% cheaper |
| End-to-end time (lower is better) | 28.12s | 9.47s | −66.3% Trinity Large Thinking is 66.3% faster |
| Price per 1M tokens (in / out) | $0.20 / $1.15 | $0.25 / $0.90 | |
| Input modalities | Not reported | Not reported |
Trinity Large Thinking vs Step 3.7 Flash: 39.5% less intelligence, 9.6% less cost to run the AA benchmark, and 66.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Step 3.7 Flash is off the frontier: at the same or lower cost, GLM-5.3-Flash scores 57.50 for $138.
- Trinity Large Thinking is off the frontier: at the same or lower cost, GLM-5.3-Flash scores 57.50 for $138.
Step 3.7 FlashTrinity Large ThinkingToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/step-3-7-flash/trinity-large-thinking · Markdown: /api/v1/compare/step-3-7-flash/trinity-large-thinking?format=md · llms.txt · agent skill