Gemini 2.5 Pro vs Kimi K3
Both are Flagship-tier models, from Google and Moonshot AI respectively. Gemini 2.5 Pro is the cheaper choice overall at a 4:1 input:output ratio.
Which is cheaper
- Input price: Gemini 2.5 Pro is cheaper ($1.25 vs $3.00).
- Output price: Gemini 2.5 Pro is cheaper ($10.00 vs $15.00).
- Blended, 4:1 input:output ratio: Gemini 2.5 Pro is 44.4% cheaper ($3.00 vs $5.40 per weighted 1M tokens).
Side by side
| Spec | Gemini 2.5 Pro | Kimi K3 |
|---|---|---|
| Provider | Moonshot AI | |
| Tier | Flagship | Flagship |
| Context window | 1.05M | 1.05M |
| Max output | 66K | — |
| Input $/1M | $1.25 | $3.00 |
| Output $/1M | $10.00 | $15.00 |
| Cache read $/1M | $0.125 | $0.30 |
| Modalities | text, image | text |
Gemini 2.5 Pro. Standard tier, <=200k tokens. >200k tier: input $2.50, output $15.00, cache $0.25/1M; cache storage $4.50/1M tokens/hour. Previous-generation flagship, still fully listed (not deprecated) on the current pricing page -- important reference point for price comparisons.
Kimi K3. input is cache-miss (standard) price per 1M tokens; cache_read is cache-hit price ($0.30).
Sources
Gemini 2.5 Pro — verified August 29, 2026
Kimi K3 — verified August 29, 2026
Full Gemini 2.5 Pro pricing page → · Full Kimi K3 pricing page →