open-source
Deepseek Chat vs Gemini 2.5 Flash
Side-by-side pricing, context window, features, and per-use-case verdict. Data sourced from LiteLLM, updated regularly.
Specifications
| Feature | Deepseek Chat | Gemini 2.5 Flash |
|---|---|---|
| Provider | deepseek | vertex ai-language-models |
| Model ID | deepseek/deepseek-chat | gemini-2.5-flash |
| Input / 1M tokens | $0.28 (7% cheaper) | $0.30 |
| Output / 1M tokens | $0.42 (83% cheaper) | $2.50 |
| Cached input / 1M | $0.03 | $0.03 |
| Context window | 131kk tokens | 1049kk tokens |
| Max output | 8kk tokens | 66kk tokens |
| Vision | ⬜ | ✅ |
| Function calling | ✅ | ✅ |
| Prompt caching | ✅ | ✅ |
| Web search | ⬜ | ✅ |
| JSON schema | ✅ | ✅ |
Monthly cost comparison
No cache discount applied — pure token costs at three usage scales.
| Scale | Deepseek Chat | Gemini 2.5 Flash | Winner |
|---|---|---|---|
| Small 1M in / 0.2M out | $0.36 | $0.80 | Deepseek Chat saves 54% |
| Medium 10M in / 2M out | $3.64 | $8.00 | Deepseek Chat saves 54% |
| Large 100M in / 20M out | $36.40 | $80.00 | Deepseek Chat saves 54% |
Category winners
Cheapest input
Deepseek Chat
$0.28/M
· 7% less than the other
Cheapest output
Deepseek Chat
$0.42/M
· 83% less than the other
Larger context
Gemini 2.5 Flash
1049kk tokens · 700% larger window
More features
Gemini 2.5 Flash
5 / 5 capabilities
Better for…
High-volume RAG & repeated context
$0.03/M cached input — prompt caching makes repeated context retrieval significantly cheaper
Deepseek Chat
Short interactions & high-throughput APIs
$0.42/M output — 83% cheaper on output at scale
Deepseek Chat
Long-document processing & large codebases
1049k context window vs 131k — 700% larger context
Gemini 2.5 Flash
Agentic workflows & tool use
Supports 5 of 5 tracked capabilities (vision, function calling, caching, web search, JSON schema)
Gemini 2.5 Flash
Deep-dive on each model
Pricing data sourced from LiteLLM and refreshed regularly. Always verify with each provider's official pricing page before making business decisions.