Compare / head-to-head
DeepSeek V4 ProvsGemini 3.8 Flash
Gemini 3.8 Flash leads 6 of 6 shared benchmarks. DeepSeek V4 Pro is 3.4x cheaper per token. Gemini 3.8 Flash has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 6
Gemini 3.8 Flash leads
Cheaper per token
DeepSeek V4 Pro
3.4x cheaper, input + output
Larger context
Gemini 3.8 Flash
1.0M tokens
Provider uptime (30d)
100% · 100%
DeepSeek · Google
DeepSeek V4 Pro
DeepSeek · released 2026-08-13
text
Gemini 3.8 Flash
Google · released 2026-09-02
textvisionaudio
Quality
Benchmark matrix
6 shared · 5 only DeepSeek V4 Pro · 9 only Gemini 3.8 Flash| Benchmark | DeepSeek V4 Pro | Gemini 3.8 Flash | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| GPQA Diamond | 90.9% ↗epoch | 95.3% ↗ | -4.4 pt | Gemini 3.8 Flash |
| DeepSWE v1.1 | 62.7% ↗ | 73.7% ↗ | -11 pt | Gemini 3.8 Flash |
| FrontierMath Tier 4 v2 (Epoch AI run) | 2.4% ↗epoch | 22% ↗epoch | -19.6 pt | Gemini 3.8 Flash |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 45.3% ↗epoch | 68.4% ↗epoch | -23.1 pt | Gemini 3.8 Flash |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 96.7% ↗epoch | 98.9% ↗epoch | -2.2 pt | Gemini 3.8 Flash |
| SimpleQA Verified | 47% ↗epoch | 69.7% ↗epoch | -22.7 pt | Gemini 3.8 Flash |
| Only DeepSeek V4 Pro reports · 5 | ||||
| AIME 2026 | 96.7% ↗matharena ⚠ | not reported | — | — |
| LMArena Elo | 1450.6 ↗ | not reported | — | — |
| Humanity's Last Exam (with tools) | 60% ↗ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 77.6% ↗epoch | not reported | — | — |
| Terminal-Bench 2.1 | 87.9% ↗ | not reported | — | — |
| Only Gemini 3.8 Flash reports · 9 | ||||
| CharXiv Reasoning (no tools) | not reported | 86.2% ↗ | — | — |
| GDPVal-AA v2 | not reported | 1545 ↗ | — | — |
| Harvey's Legal Agent Benchmark | not reported | 10% ↗ | — | — |
| HLE-Verified | not reported | 54.9% ↗ | — | — |
| LABBench2 | not reported | 86.2% ↗ | — | — |
| OSWorld-2.0 | not reported | 59% ↗ | — | — |
| Terminal-bench 2.1 | not reported | 89.4% ↗ | — | — |
| Terminal-bench 4.0 | not reported | 19.1% ↗ | — | — |
| Vals Finance Agent v2 | not reported | 61.4% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is DeepSeek V4 Pro minus Gemini 3.8 Flash in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | DeepSeek V4 Pro | Gemini 3.8 Flash | Edge |
|---|---|---|---|
| Context window | 1M tokens | 1.0M tokens | Gemini 3.8 Flash |
| Max output | 384K tokens | 66K tokens | DeepSeek V4 Pro |
| Input price / 1M | $0.435 ↗ | $0.75 ↗ | DeepSeek V4 Pro |
| Output price / 1M | $0.87 ↗ | $3.75 ↗ | DeepSeek V4 Pro |
| Cached input / 1M | $0.004 ↗ | $0.075 ↗ | DeepSeek V4 Pro |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $1.31 | $4.5 | DeepSeek V4 Pro |
| Modalities | text | text · vision · audio | Gemini 3.8 Flash |
| Released | 2026-08-13 | 2026-09-02 | — |
| Cited benchmark scores | 11 | 16 | — |
Reliability
Provider status
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Which one wins on your data?
Public benchmarks are a starting point. Run DeepSeek V4 Pro and Gemini 3.8 Flash on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.