Pairwise benchmark snapshot · Aug 16, 2026
In this head-to-head showdown, Claude Opus 4.8 delivers higher overall intelligence and human-preferred responses (Elo 1,598 vs 1,530), while Claude Opus 4.8 leads in SWE-bench software engineering benchmarks (78.4%), while Gemini 3.7 Flash is more budget-friendly at $3.75/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Prior Opus generation still billed at $5/$25. Kept as a compare baseline against Opus 5.
Google Aug 13 2026 workhorse. Official intro price $0.75/$3.75 per 1M through Dec 31 2026; 1,048,576-token context (Google blog).
Currently comparing Claude Opus 4.8 vs Gemini 3.7 Flash. Alternative family tiers available.
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 68 Arena Elo pts
215 tok/s
$3.75 / 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 Opus 4.8 | Gemini 3.7 Flash | Advantage Delta |
|---|---|---|---|
| Preference Elo | +68 | ||
| Coding Elo | +58 | ||
| LiveBench | +4% | ||
| SWE-bench | +6% | ||
| GPQA Diamond | +5% | ||
| Time to first token | +248 ms | ||
| Output speed | 66 tok/s | 215 tok/s | +149 tok/s |
| Input price | $0.75/1M | +$4.25/1M | |
| Output price | $3.75/1M | +$21.25/1M | |
| Context window | +49k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 3.7 Flash is estimated to save $467.50/month ($5,610/year).
Higher SWE-bench (78.4%).
Lower output list price ($3.75/1M).
Lower TTFT (82 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.8).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4.8 | Higher SWE-bench (78.4%). |
| High-volume chat | Gemini 3.7 Flash | Lower output list price ($3.75/1M). |
| Voice / low-latency UI | Gemini 3.7 Flash | Lower TTFT (82 ms). |
| Long-document RAG | Gemini 3.7 Flash | Larger window (1M). |
| Screenshots / vision | Claude Opus 4.8 | Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.8). |
3.7 Flash vs 3.6 Pro is the current Google volume-versus-upgrade pair.
Jul 21 workhorse that inherited $0.75/$3.75 through year-end. Keep the row; 3.7 is the newer sibling.
Google’s current workhorse drop. Official intro list and 1,048,576-token context. Compare to Luna and Haiku.
2M context, Pro-class Elo and coding. Upgrade path from Flash is this page, not a vibe check.
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Verified Head-to-Head Telemetry
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Gemini Flash vs Pro: when Flash is the whole product
price · Aug 13, 2026
Gemini 3.6 Flash (Jul 21) now shares the 3.7 intro rate
launch · Aug 13, 2026
Gemini 3.7 Flash (Aug 13): $0.75/$3.75 intro through Dec 31 2026
launch · Jul 15, 2026
Gemini 3.6 Pro: Google’s current Pro-class long-context row
