Pairwise benchmark snapshot · Aug 16, 2026
This page compares Gemini 3.6 Flash (Google) and Seed 2.1 Turbo (ByteDance) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Gemini 3.6 Flash is ahead by 34 points (1,506 vs 1,472; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Gemini 3.6 Flash resolves 70.8% versus 63.2% (seed-bootstrap (Aug 16, 2026)). Gemini 3.6 Flash streams faster (198 tok/s) while Seed 2.1 Turbo is the cheaper output token ($2.5/1M). Gemini 3.6 Flash has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.
Google Jul 21 workhorse. Now shares the 3.7 Flash introductory $0.75/$3.75 rate through Dec 31 2026.
ByteDance
Seed 2.1 TurboByteDance Seed 2.1 Turbo, listed on public model timelines as an Aug 10 2026 API drop.
Instant pairwise benchmark recalculation across 400+ LLMs
Category wins across intelligence, speed, and pricing efficiency.
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
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
34 pts advantage
38 tok/s faster
$1.25/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Seed 2.1 Turbo is estimated to save $27.50/month ($330/year).
Higher SWE-bench (70.8%).
Lower output list price ($2.5/1M).
Lower TTFT (92 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Gemini 3.6 Flash).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 3.6 Flash | Higher SWE-bench (70.8%). |
| High-volume chat | Seed 2.1 Turbo | Lower output list price ($2.5/1M). |
| Voice / low-latency UI | Gemini 3.6 Flash | Lower TTFT (92 ms). |
| Long-document RAG | Gemini 3.6 Flash | Larger window (1M). |
| Screenshots / vision | Gemini 3.6 Flash | Both accept images. Defaulting to the higher-Elo side (Gemini 3.6 Flash). |
Jul 21 workhorse that inherited $0.75/$3.75 through year-end. Keep the row; 3.7 is the newer sibling.
Listed on public model timelines as an Aug 10 2026 API drop. Preview-quality story, indexable because we have a full snapshot.
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The real PNG is generated at /compare/gemini-3-6-flash-vs-seed-2-1-turbo/opengraph-image for crawlers.
Verified head-to-head card
