Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)
In this head-to-head showdown, Qwen: Qwen3.5 Plus 2026-04-20 is more budget-friendly at $1.8/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
3 benchmarks evaluated across capability, speed, and cost
First million-token Gemini Pro. Baseline for 1.5 vs 2.5 vs 3.x Pro.
Auto-discovered from OpenRouter (qwen/qwen3.5-plus-20260420). Preview until a second source matches.
Single model data
No latency data
$1.7999999999999998 / 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 | Gemini 1.5 Pro | Qwen: Qwen3.5 Plus 2026-04-20 | Advantage Delta |
|---|---|---|---|
| Preference Elo | — | — | |
| LiveBench | — | — | |
| SWE-bench | — | — | |
| GPQA Diamond | — | — | |
| Time to first token | — | — | |
| Output speed | 70 tok/s | — | — |
| Input price | $1.25/1M | $0.3/1M | +$0.95/1M |
| Output price | $1.8/1M | +$3.2/1M | |
| Context window | +1M |
Simulate monthly production API costs in USD (US Dollar).
Qwen: Qwen3.5 Plus 2026-04-20 is estimated to save $81.25/month ($975/year).
Need SWE-bench on both sides.
Lower output list price ($1.8/1M).
Need TTFT on both sides.
Larger window (2M).
Gemini 1.5 Pro is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | insufficient data | Need SWE-bench on both sides. |
| High-volume chat | Qwen: Qwen3.5 Plus 2026-04-20 | Lower output list price ($1.8/1M). |
| Voice / low-latency UI | insufficient data | Need TTFT on both sides. |
| Long-document RAG | Gemini 1.5 Pro | Larger window (2M). |
| Screenshots / vision | Gemini 1.5 Pro | Gemini 1.5 Pro is the side marked multimodal in the catalog. |
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Verified Head-to-Head Telemetry
