Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Agnes 2.5 Pro Alpha | Trinity Large Thinking |
|---|---|---|
| Input ($/M tokens) | $0.45 | $0.235 |
| Output ($/M tokens) | $0.9 | $0.875 |
Verdict. Agnes 2.5 Pro Alpha wins the overall benchmark matchup 5–2 across 7 overlapping categories, but raw benchmark score is only one input to the decision.
Pricing. Both models sit in the budget bracket for output-token pricing. At 1.0× the per-million-token cost, Trinity Large Thinking is meaningfully cheaper if your traffic is output-heavy (long completions, document generation, agent loops). Trinity Large Thinking makes more sense when output volume is low and absolute reasoning quality justifies the premium.
Strengths. Agnes 2.5 Pro Alpha is strongest on GPQA Diamond (88%), Coding Index (58.8), SciCode (42%). Trinity Large Thinking leads on GPQA Diamond (75%), IFBench (56%), SciCode (36%).
Speed. Throughput is comparable — 134 tok/s vs 142 tok/s — so generation speed shouldn't drive your choice here. Look at the per-benchmark wins instead.
Provider. Sapiens AI and Arcee AI sell to overlapping but distinct developer audiences: Sapiens AI tends to ship frontier reasoning models with premium positioning, while Arcee AI often prices more aggressively. Your existing vendor relationships, billing, and SLA preferences may matter as much as the raw numbers above.
Workload cost. Workload scenarios (per million requests at 30M input + 15M output tokens): Agnes 2.5 Pro Alpha costs $27.00 ($324/year); Trinity Large Thinking costs $20.18 ($242/year). At a smaller 5M-input/2M-output scale (single-developer tool or prototype): Agnes 2.5 Pro Alpha ≈ $4.05/run, Trinity Large Thinking ≈ $2.92/run. At agent/realtime scale (200M input / 100M output per million requests): Agnes 2.5 Pro Alpha ≈ $180/run, Trinity Large Thinking ≈ $135/run. Trinity Large Thinking becomes more attractive at higher volume — the absolute per-token pricing difference compounds when you ship at scale.
Recommendation. Both models have legitimate use cases — the right answer depends on whether you are optimizing for benchmark ceiling, latency, or unit cost. Start with the cheaper / faster model, evaluate against your specific task, and only switch if the upgrade shows a meaningful lift.
Data from Artificial Analysis API — 12 benchmarks
Trinity Large Thinking is cheaper overall. Its blended price (3:1 input/output ratio) is $0.40/M tokens vs $0.56/M for Agnes 2.5 Pro Alpha.
Agnes 2.5 Pro Alpha wins 5 out of 12 benchmarks compared to 2 for Trinity Large Thinking. See the detailed benchmark chart above for per-category results.
Trinity Large Thinking generates tokens faster at 142 tok/s vs 134 tok/s. However, Trinity Large Thinking has lower time-to-first-token (0.49s vs 1.93s).
Choose based on your priorities: Trinity Large Thinking for lower cost, Agnes 2.5 Pro Alpha for stronger benchmark performance, and Trinity Large Thinking for faster generation. For latency-sensitive apps, check the TTFT comparison above.