Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude Opus 4 delivers higher overall intelligence and human-preferred responses (Elo 1,490 vs 1,248), while Claude Opus 4 leads in SWE-bench software engineering benchmarks (72.5%), while Claude 3 Opus is more budget-friendly at $75/1M per 1M output tokens, while Claude Opus 4 provides faster response streaming (58 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
6 benchmarks evaluated across capability, speed, and cost
Original Claude 3 flagship. Kept so opus 3 vs later Opus and vs GPT-4o still resolve.
First Claude 4 Opus generation. Baseline for opus 4 vs opus 5.
Δ 242 Arena Elo pts
58 tok/s
$75 / 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 | Claude 3 Opus | Claude Opus 4 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +242 | ||
| Coding Elo | — | — | |
| LiveBench | +20.6% | ||
| SWE-bench | +34.1% | ||
| GPQA Diamond | +30% | ||
| Time to first token | +30 ms | ||
| Output speed | 48 tok/s | 58 tok/s | +10 tok/s |
| Input price | — | ||
| Output price | — | ||
| Context window | — |
Simulate monthly production API costs in USD (US Dollar).
Higher SWE-bench (72.5%).
Lower output list price ($75/1M).
Lower TTFT (390 ms).
Larger window (200k).
Both accept images. Defaulting to the higher-Elo side (Claude Opus 4).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4 | Higher SWE-bench (72.5%). |
| High-volume chat | Claude 3 Opus | Lower output list price ($75/1M). |
| Voice / low-latency UI | Claude Opus 4 | Lower TTFT (390 ms). |
| Long-document RAG | Claude 3 Opus | Larger window (200k). |
| Screenshots / vision | Claude Opus 4 | Both accept images. Defaulting to the higher-Elo side (Claude Opus 4). |
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Verified Head-to-Head Telemetry
