Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)
In this head-to-head showdown, DeepSeek V4 Flash is more budget-friendly at $0.28/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
Auto-discovered from OpenRouter (deepseek/deepseek-v3.1-terminus). Preview until a second source matches.
DeepSeek Jul 31 2026 price-performance SKU. Public listings put it near $0.14/$0.28 per 1M tokens.
Single model data
No latency data
$0.28 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
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 | DeepSeek: DeepSeek V3.1 Terminus | DeepSeek V4 Flash | Advantage Delta |
|---|---|---|---|
| Preference Elo | — | — | |
| Coding Elo | — | — | |
| LiveBench | — | — | |
| SWE-bench | — | — | |
| GPQA Diamond | — | — | |
| Time to first token | — | — | |
| Output speed | — | 142 tok/s | — |
| Input price | $0.27/1M | $0.14/1M | DeepSeek V4 Flash (+$0.13/1M) |
| Output price | $0.95/1M | $0.28/1M | DeepSeek V4 Flash (+$0.67/1M) |
| Context window | DeepSeek V4 Flash (+1.1M) |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Flash is estimated to save $14.60/month ($175/year).
Need SWE-bench on both sides.
Lower output list price ($0.28/1M).
Need TTFT on both sides.
Larger window (1.3M).
DeepSeek V4 Flash is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | insufficient data | Need SWE-bench on both sides. |
| High-volume chat | DeepSeek V4 Flash | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | insufficient data | Need TTFT on both sides. |
| Long-document RAG | DeepSeek V4 Flash | Larger window (1.3M). |
| Screenshots / vision | DeepSeek V4 Flash | DeepSeek V4 Flash is the side marked multimodal in the catalog. |
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Verified head-to-head card
