Pairwise benchmark snapshot · Aug 16, 2026
This page compares DeepSeek V4 Pro (DeepSeek) and Doubao Pro 1.5 (ByteDance) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, DeepSeek V4 Pro is ahead by 66 points (1,536 vs 1,470; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, DeepSeek V4 Pro resolves 71.6% versus 62.1% (seed-bootstrap (Aug 1, 2026)). Doubao Pro 1.5 streams faster (105 tok/s) while Doubao Pro 1.5 is the cheaper output token ($0.28/1M). DeepSeek V4 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.
DeepSeek
DeepSeek V4 ProOpen-weight-adjacent DeepSeek flagship. High reasoning density per dollar.
ByteDance
Doubao Pro 1.5ByteDance flagship enterprise model with ultra-low token cost and 128k context.
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.
66 pts advantage
35 tok/s faster
$0.59/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Doubao Pro 1.5 is estimated to save $20.22/month ($243/year).
Higher SWE-bench (71.6%).
Lower output list price ($0.28/1M).
Lower TTFT (190 ms).
Larger window (1M).
Doubao Pro 1.5 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | DeepSeek V4 Pro | Higher SWE-bench (71.6%). |
| High-volume chat | Doubao Pro 1.5 | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | Doubao Pro 1.5 | Lower TTFT (190 ms). |
| Long-document RAG | DeepSeek V4 Pro | Larger window (1M). |
| Screenshots / vision | Doubao Pro 1.5 | Doubao Pro 1.5 is the side marked multimodal in the catalog. |
Top DeepSeek vs top Anthropic Elo. Usually V4 Pro vs Opus 5. License and invoice decide as much as Elo.
2026-06 open-weight-adjacent flagship. The usual cheap-vs-Claude question starts here.
Jan 2025 reasoning model. Still searched. V4 Pro is the newer DeepSeek buy.
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The real PNG is generated at /compare/deepseek-v4-pro-vs-doubao-1-5-pro-128k/opengraph-image for crawlers.
Verified head-to-head card
