Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, GPT-4.5 Orion delivers higher overall intelligence and human-preferred responses (Elo 1,540 vs 1,475), while GPT-4.5 Orion leads in SWE-bench software engineering benchmarks (71%), 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.
10 benchmarks evaluated across capability, speed, and cost
OpenAI largest dense non-reasoning model with expansive world knowledge and reduced hallucinations.
01.AI ultra-fast reasoning model delivering top LiveBench efficiency.
Currently comparing GPT-4.5 Orion vs Yi-Lightning. Alternative family tiers available.
Δ 65 Arena Elo pts
130 tok/s
$0.14 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top standard models across 6 key capability 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 | GPT-4.5 Orion | Yi-Lightning | Advantage Delta |
|---|---|---|---|
| Preference Elo | +65 | ||
| Coding Elo | +40 | ||
| LiveBench | +3.5% | ||
| SWE-bench | +7.6% | ||
| GPQA Diamond | +6% | ||
| Time to first token | +200 ms | ||
| Output speed | 60 tok/s | 130 tok/s | +70 tok/s |
| Input price | $0.14/1M | +$74.86/1M | |
| Output price | $150/1M | $0.14/1M | +$149.86/1M |
| Context window | +112k |
Simulate monthly production API costs in USD (US Dollar).
Yi-Lightning is estimated to save $4,868.00/month ($58,416/year).
Higher SWE-bench (71%).
Lower output list price ($0.14/1M).
Lower TTFT (150 ms).
Larger window (128k).
GPT-4.5 Orion is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | GPT-4.5 Orion | Higher SWE-bench (71%). |
| 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 | GPT-4.5 Orion | Larger window (128k). |
| Screenshots / vision | GPT-4.5 Orion | GPT-4.5 Orion is the side marked multimodal in the catalog. |
No comments posted on this matchup yet. Be the first to share an evaluation note!
Dynamic OpenGraph banner generated at /compare/gpt-4-5-vs-yi-lightning/opengraph-image
Verified Head-to-Head Telemetry
