Gemini 2.5 Flash-Lite vs DeepSeek V3 — LLM API Cost Comparison
Compare Gemini 2.5 Flash-Lite (Google) vs DeepSeek V3 (DeepSeek) on cost per million tokens, context window, and monthly spend.
Prices verified 2026-05-20 · Pricing may change — use the calculator for current estimates
- Input
- $0.1/1M tokens
- Output
- $0.4/1M tokens
- Context
- 1M tokens
- Released
- 2025-09
Smallest & cheapest Gemini 2.5; built for scale
- Input
- $0.27/1M tokens
- Output
- $1.1/1M tokens
- Context
- 128K tokens
- Released
- 2025-03
Proven open model; cache hit: $0.07/1M input; can also be self-hosted
Monthly Cost by Usage Tier (70% input / 30% output ratio)
| Usage | Gemini 2.5 Flash-Lite | DeepSeek V3 | Cheaper by |
|---|---|---|---|
| Light (1M tokens) | $0.190 | $0.519 | Gemini 2.5 Flash-Lite (63%) |
| Moderate (10M tokens) | $1.90 | $5.19 | Gemini 2.5 Flash-Lite (63%) |
| Heavy (100M tokens) | $19.00 | $51.90 | Gemini 2.5 Flash-Lite (63%) |
| Very Heavy (1B tokens) | $190 | $519 | Gemini 2.5 Flash-Lite (63%) |
Frequently Asked Questions
Which is cheaper — Gemini 2.5 Flash-Lite or DeepSeek V3?
For input tokens, Gemini 2.5 Flash-Lite is cheaper at $0.1/1M tokens — 2.7× less than $0.27/1M. For output tokens, Gemini 2.5 Flash-Lite wins at $0.4/1M vs $1.1/1M. At heavy workloads (100M tokens/month), the cost difference can be significant.
What is the context window difference between Gemini 2.5 Flash-Lite and DeepSeek V3?
Gemini 2.5 Flash-Lite supports 1,000,000 tokens per request; DeepSeek V3 supports 128,000 tokens. Gemini 2.5 Flash-Lite wins on context length, making it better for long documents, large codebases, or extended conversations without chunking.
When should I choose Gemini 2.5 Flash-Lite over DeepSeek V3?
Choose Gemini 2.5 Flash-Lite (Google) if you prefer Google's ecosystem, tooling, or reliability track record. Smallest & cheapest Gemini 2.5; built for scale. Choose DeepSeek V3 (DeepSeek) if Proven open model; cache hit: $0.07/1M input; can also be self-hosted. the price/performance fits your workload better. Use this calculator to find the break-even point for your exact token volume.
How much does 1 billion tokens cost on Gemini 2.5 Flash-Lite vs DeepSeek V3?
At 700M input + 300M output tokens (1B total): Gemini 2.5 Flash-Lite costs $190; DeepSeek V3 costs $519. The difference is $329/billion tokens at this 70/30 input/output ratio.