Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, OpenAI o1 delivers higher overall intelligence and human-preferred responses (Elo 1,512 vs 1,475), while Yi-Lightning leads in SWE-bench software engineering benchmarks (63.4%), while Yi-Lightning is more budget-friendly at $0.14/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
OpenAI pioneer reasoning foundation model designed for complex science, math, and multi-step reasoning.
01.AI ultra-fast reasoning model delivering top LiveBench efficiency.
Currently comparing OpenAI o1 vs Yi-Lightning. Alternative family tiers available.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Δ 37 Arena Elo pts
130 tok/s
$0.14 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | OpenAI o1 | Yi-Lightning | Advantage Delta |
|---|---|---|---|
| Preference Elo | +37 | ||
| Coding Elo | +5 | ||
| LiveBench | +0.4% | ||
| SWE-bench | +14.5% | ||
| GPQA Diamond | — | ||
| Time to first token | +270 ms | ||
| Output speed | 45 tok/s | 130 tok/s | +85 tok/s |
| Input price | $0.14/1M | +$14.86/1M | |
| Output price | $0.14/1M | +$59.86/1M | |
| Context window | +184k |
Simulate monthly production API costs in USD (US Dollar).
Yi-Lightning is estimated to save $1,418.00/month ($17,016/year).
Higher SWE-bench (63.4%).
Lower output list price ($0.14/1M).
Lower TTFT (150 ms).
Larger window (200k).
OpenAI o1 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Yi-Lightning | Higher SWE-bench (63.4%). |
| High-volume chat | Yi-Lightning | Lower output list price ($0.14/1M). |
| Voice / low-latency UI | Yi-Lightning | Lower TTFT (150 ms). |
| Long-document RAG | OpenAI o1 | Larger window (200k). |
| Screenshots / vision | OpenAI o1 | OpenAI o1 is the side marked multimodal in the catalog. |
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Verified Head-to-Head Telemetry
