Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude Sonnet 5 delivers higher overall intelligence and human-preferred responses (Elo 1,556 vs 1,350), while Claude Sonnet 5 leads in SWE-bench software engineering benchmarks (73.8%), while Claude Sonnet 5 is more budget-friendly at $10/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
8 benchmarks evaluated across capability, speed, and cost
Anthropic workhorse. Official $2/$10 per 1M tokens made permanent on Aug 10 2026.
Previous Google long-context flagship.
Currently comparing Claude Sonnet 5 vs Gemini 2.5 Pro. Alternative family tiers available.
Δ 206 Arena Elo pts
118 tok/s
$10 / 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 Sonnet 5 | Gemini 2.5 Pro | Advantage Delta |
|---|---|---|---|
| Preference Elo | +206 | ||
| Coding Elo | — | — | |
| LiveBench | +13.3% | ||
| SWE-bench | +10% | ||
| GPQA Diamond | +6.4% | ||
| Time to first token | +35 ms | ||
| Output speed | 118 tok/s | 95 tok/s | +23 tok/s |
| Input price | $1.25/1M | +$0.75/1M | |
| Output price | — | ||
| Context window | +49k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 2.5 Pro is estimated to save $26.25/month ($315/year).
Higher SWE-bench (73.8%).
Lower output list price ($10/1M).
Lower TTFT (175 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 5).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Sonnet 5 | Higher SWE-bench (73.8%). |
| High-volume chat | Claude Sonnet 5 | Lower output list price ($10/1M). |
| Voice / low-latency UI | Claude Sonnet 5 | Lower TTFT (175 ms). |
| Long-document RAG | Gemini 2.5 Pro | Larger window (1M). |
| Screenshots / vision | Claude Sonnet 5 | Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 5). |
Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.
Aug 10 2026 made the $2/$10 list permanent. Sonnet is the default Claude unless the repo is actually on fire.
Most of Opus 4.5 coding at a mid-tier price. Sonnet 5 replaced it as the buy; 4.5 remains a compare baseline.
2025-03 row. 3.x Pro replaced it. Kept for old “2.5 pro vs gpt-4o” inbound.
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Verified Head-to-Head Telemetry
compare · Aug 10, 2026
Sonnet vs Opus in 2026: same family, different invoice
price · Aug 10, 2026
Claude Sonnet 5 at $2/$10: the 2026 Anthropic workhorse
launch · Feb 18, 2026
Claude Sonnet 4.5 is the previous workhorse — still a valid vs baseline
launch · Mar 25, 2025
Gemini 2.5 Pro remains the previous Google long-context flagship
