Compare / head-to-head
DeepSeek R1vsGemini 3.8 Flash
Gemini 3.8 Flash leads 2 of 2 shared benchmarks. 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 – 2
Gemini 3.8 Flash leads
Cheaper per token
—
list price, input + output
Larger context
Gemini 3.8 Flash
1.0M tokens
Provider uptime (30d)
100% · 100%
DeepSeek · Google
DeepSeek R1
DeepSeek · released 2025-01-20
text
- Context
- 128K
- Max out
- 33K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 8 · 7 core
Gemini 3.8 Flash
Google · released 2026-09-02
textvisionaudio
Quality
Benchmark matrix
2 shared · 5 only DeepSeek R1 · 13 only Gemini 3.8 Flash| Benchmark | DeepSeek R1 | Gemini 3.8 Flash | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| GPQA Diamond | 71.5% ↗ | 95.3% ↗ | -23.8 pt | Gemini 3.8 Flash |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 53.3% ↗epoch | 98.9% ↗epoch | -45.6 pt | Gemini 3.8 Flash |
| Only DeepSeek R1 reports · 5 | ||||
| SWE-bench Verified | 49.2% ↗ | not reported | — | — |
| MMLU | 90.8% ↗ | not reported | — | — |
| MMLU-Pro | 84% ↗ | not reported | — | — |
| AIME 2025 | 70% ↗matharena | not reported | — | — |
| LMArena Elo | 1372.6 ↗ | not reported | — | — |
| Only Gemini 3.8 Flash reports · 13 | ||||
| CharXiv Reasoning (no tools) | not reported | 86.2% ↗ | — | — |
| DeepSWE v1.1 | not reported | 73.7% ↗ | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 22% ↗epoch | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 68.4% ↗epoch | — | — |
| 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% ↗ | — | — |
| SimpleQA Verified | not reported | 69.7% ↗epoch | — | — |
| 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 R1 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 R1 | Gemini 3.8 Flash | Edge |
|---|---|---|---|
| Context window | 128K tokens | 1.0M tokens | Gemini 3.8 Flash |
| Max output | 33K tokens | 66K tokens | Gemini 3.8 Flash |
| Input price / 1M | — | $0.75 ↗ | — |
| Output price / 1M | — | $3.75 ↗ | — |
| Cached input / 1M | — | $0.075 ↗ | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | $4.5 | — |
| Modalities | text | text · vision · audio | Gemini 3.8 Flash |
| Released | 2025-01-20 | 2026-09-02 | — |
| Cited benchmark scores | 8 | 16 | — |
Reliability
Provider status
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