Pairwise benchmark snapshot · Aug 16, 2026
This page compares Gemini 2.5 Pro (Google) and Seed 2.1 Turbo (ByteDance) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Seed 2.1 Turbo is ahead by 122 points (1,472 vs 1,350; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Gemini 2.5 Pro resolves 63.8% versus 63.2% (seed-bootstrap (Aug 1, 2026)). Seed 2.1 Turbo streams faster (160 tok/s) while Seed 2.1 Turbo is the cheaper output token ($2.5/1M). Gemini 2.5 Pro 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.
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.
122 pts advantage
65 tok/s faster
$7.50/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Seed 2.1 Turbo is estimated to save $138.75/month ($1,665/year).
Higher SWE-bench (63.8%).
Lower output list price ($2.5/1M).
Lower TTFT (120 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Seed 2.1 Turbo).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 2.5 Pro | Higher SWE-bench (63.8%). |
| High-volume chat | Seed 2.1 Turbo | Lower output list price ($2.5/1M). |
| Voice / low-latency UI | Seed 2.1 Turbo | Lower TTFT (120 ms). |
| Long-document RAG | Gemini 2.5 Pro | Larger window (1M). |
| Screenshots / vision | Seed 2.1 Turbo | Both accept images. Defaulting to the higher-Elo side (Seed 2.1 Turbo). |
Listed on public model timelines as an Aug 10 2026 API drop. Preview-quality story, indexable because we have a full snapshot.
2025-03 row. 3.x Pro replaced it. Kept for old “2.5 pro vs gpt-4o” inbound.
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The real PNG is generated at /compare/gemini-2-5-pro-vs-seed-2-1-turbo/opengraph-image for crawlers.
Verified head-to-head card
