DeepSeek V3.2 vs Gemini 3.1 Pro: Benchmarks, Pricing & Capabilities Compared
TL;DR — DeepSeek V3.2 wins for cost · Gemini 3.1 Pro wins for reasoning + long-context.
DeepSeek V3.2 DeepSeek
- Released
- 2026-02-12
- Context window
- 1M tokens
- Input price
- $0.27 / Mtok
- Output price
- $1.10 / Mtok
Key features
- 1M+ token context window (10x expansion)
- Improved reasoning capabilities
- Open source release
Gemini 3.1 Pro Google
- Released
- 2026-02-19
- Context window
- 2M tokens
- Input price
- $2.50 / Mtok
- Output price
- $10.00 / Mtok
Key features
- 2x reasoning improvement
- ARC-AGI-2 score of 77.1%
- Enhanced multimodal understanding
Benchmark comparison
| Benchmark | DeepSeek V3.2 | Gemini 3.1 Pro |
|---|---|---|
| LiveCodeBench | 72.1% | 78.9% ✓ |
| MATH | 85.6% | 89.4% ✓ |
Pricing comparison
| Metric | DeepSeek V3.2 | Gemini 3.1 Pro |
|---|---|---|
| Input ($/Mtok) | $0.27 | $2.50 |
| Output ($/Mtok) | $1.10 | $10.00 |
| Cached input ($/Mtok) | $0.07 | $0.25 |
| Cost per 1M-token roundtrip (1M in + 1M out) | $1.37 | $12.50 |
Context window & modalities
| Attribute | DeepSeek V3.2 | Gemini 3.1 Pro |
|---|---|---|
| Context window | 1M tokens | 2M tokens |
| Input modalities | text | text, image, audio, video, PDF |
| Output modalities | text | text |
| Knowledge cutoff | 2025-09 | 2025-12 |
Verdict by use case
Coding
→ Gemini 3.1 Pro
Basis: LiveCodeBench
DeepSeek V3.2 72.1% vs Gemini 3.1 Pro 78.9% on LiveCodeBench.
Reasoning
→ Gemini 3.1 Pro
Basis: GPQA Diamond
DeepSeek V3.2 68.4% vs Gemini 3.1 Pro 84.2% on GPQA Diamond.
Math
→ Gemini 3.1 Pro
Basis: MATH
DeepSeek V3.2 85.6% vs Gemini 3.1 Pro 89.4% on MATH.
Long context
→ Gemini 3.1 Pro
Basis: Context window
DeepSeek V3.2 1M tokens vs Gemini 3.1 Pro 2M tokens.
Cost
→ DeepSeek V3.2
Basis: Input $/Mtok
DeepSeek V3.2 $0.27/Mtok vs Gemini 3.1 Pro $2.5/Mtok input.
Changelog & releases
DeepSeek V3.2
Released 2026-02-12
Predecessor: deepseek-deepseek-v3
- 10x context window expansion (128K → 1M+ tokens)
- Sliding-window attention for long-context throughput
- Improved chain-of-thought reasoning
- Native FP8 inference support
Gemini 3.1 Pro
Released 2026-02-19
Predecessor: google-gemini-3-pro
- 2x reasoning score on ARC-AGI-2 vs Gemini 3 Pro
- Context window expanded to 2M tokens
- Deep Think mode enabled by default on the Pro tier
- Lower latency on first-token despite larger context