Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude 3.7 Sonnet delivers higher overall intelligence and human-preferred responses (Elo 1,362 vs 1,224), while Claude 3.7 Sonnet leads in SWE-bench software engineering benchmarks (70.3%), while Claude 3.5 Haiku is more budget-friendly at $4/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
8 direct benchmark disciplines evaluated across capability, speed, and cost
Previous cheap Claude. Haiku 4.5 is the current $1/$5 SKU.
Hybrid-reasoning Sonnet from 2025. Kept for historical compare pages.
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 138 Arena Elo pts
140 tok/s
$4 / 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 | Claude 3.5 Haiku | Claude 3.7 Sonnet | Advantage Delta |
|---|---|---|---|
| Preference Elo | +138 | ||
| LiveBench | +13.6% | ||
| SWE-bench | +34.1% | ||
| GPQA Diamond | +24.4% | ||
| Time to first token | +130 ms | ||
| Output speed | 140 tok/s | 85 tok/s | +55 tok/s |
| Input price | $0.8/1M | +$2.2/1M | |
| Output price | +$11/1M | ||
| Context window | — |
Simulate monthly production API costs in USD (US Dollar).
Claude 3.5 Haiku is estimated to save $242.00/month ($2,904/year).
Higher SWE-bench (70.3%).
Lower output list price ($4/1M).
Lower TTFT (110 ms).
Larger window (200k).
Both accept images. Defaulting to the higher-Elo side (Claude 3.7 Sonnet).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude 3.7 Sonnet | Higher SWE-bench (70.3%). |
| High-volume chat | Claude 3.5 Haiku | Lower output list price ($4/1M). |
| Voice / low-latency UI | Claude 3.5 Haiku | Lower TTFT (110 ms). |
| Long-document RAG | Claude 3.5 Haiku | Larger window (200k). |
| Screenshots / vision | Claude 3.7 Sonnet | Both accept images. Defaulting to the higher-Elo side (Claude 3.7 Sonnet). |
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Verified Head-to-Head Telemetry
