Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, GPT-5 delivers higher overall intelligence and human-preferred responses (Elo 1,558 vs 1,506), while Gemini 3.6 Flash leads in SWE-bench software engineering benchmarks (70.8%), while Gemini 3.6 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
Google Jul 21 workhorse. Now shares the 3.7 Flash introductory $0.75/$3.75 rate through Dec 31 2026.
OpenAI flagship reasoning model for 2025–26. Strong general preference Elo and multimodal coverage.
Currently comparing Gemini 3.6 Flash vs GPT-5. 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 52 Arena Elo pts
198 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 | Gemini 3.6 Flash | GPT-5 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +52 | ||
| Coding Elo | +26 | ||
| LiveBench | +2.6% | ||
| SWE-bench | +2.4% | ||
| GPQA Diamond | +5.6% | ||
| Time to first token | +198 ms | ||
| Output speed | 198 tok/s | 78 tok/s | +120 tok/s |
| Input price | $0.75/1M | $1.25/1M | +$0.5/1M |
| Output price | $3.75/1M | +$6.25/1M | |
| Context window | +649k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 3.6 Flash is estimated to save $111.25/month ($1,335/year).
Higher SWE-bench (70.8%).
Lower output list price ($3.75/1M).
Lower TTFT (92 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (GPT-5).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 3.6 Flash | Higher SWE-bench (70.8%). |
| High-volume chat | Gemini 3.6 Flash | Lower output list price ($3.75/1M). |
| Voice / low-latency UI | Gemini 3.6 Flash | Lower TTFT (92 ms). |
| Long-document RAG | Gemini 3.6 Flash | Larger window (1M). |
| Screenshots / vision | GPT-5 | Both accept images. Defaulting to the higher-Elo side (GPT-5). |
Jul 21 workhorse that inherited $0.75/$3.75 through year-end. Keep the row; 3.7 is the newer sibling.
Still a common compare target. 5.6 Sol replaced it as the buy; GPT-5 stays for old URLs.
No comments posted on this matchup yet. Be the first to share an evaluation note!
Dynamic OpenGraph banner generated at /compare/gemini-3-6-flash-vs-gpt-5/opengraph-image
Verified Head-to-Head Telemetry