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Gemini 2.5 Flash vs DeepSeek V3
A detailed comparison of Gemini 2.5 Flash (Google) and DeepSeek V3 (DeepSeek) across pricing, performance, and features.
Pricing Comparison
| Metric | Gemini 2.5 Flash | DeepSeek V3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.15 | $0.14 | -7% |
| Output / 1M tokens | $0.60 | $0.28 | -53% |
| Context window | 1M | 164K | — |
| Max output | 65.536K | 16.384K | — |
Benchmark Comparison
| Benchmark | Gemini 2.5 Flash | DeepSeek V3 |
|---|---|---|
| MMLU-Pro | 76% | 78% |
| HumanEval | 89.5% | 89% |
Capabilities
| Capability | Gemini 2.5 Flash | DeepSeek V3 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✗ |
| vision | ✓ | ✗ |
Gemini 2.5 Flash Strengths
- ✓One of the cheapest models available
- ✓1M context at budget pricing
- ✓Free tier available
Gemini 2.5 Flash Weaknesses
- ✗Weaker than Flash 3 on most benchmarks
- ✗Output quality inconsistent on edge cases
DeepSeek V3 Strengths
- ✓Cheapest capable model available
- ✓Strong coding performance
- ✓Open-source
DeepSeek V3 Weaknesses
- ✗No vision support
- ✗Smaller context than competitors
- ✗China-based — availability concerns
Quick Verdict
Best value: DeepSeek V3 is the more affordable option at $0.14/$0.28 per 1M tokens.
Higher benchmarks: DeepSeek V3 scores higher on average across available benchmarks (83.5% avg).
Larger context: Gemini 2.5 Flash supports 1M tokens.
Choose DeepSeek V3 if cost matters most. Choose Gemini 2.5 Flash if you need the best possible quality for complex tasks.