Gemini 3 Flash Preview is $0.1 cheaper per 1M input tokens (16.7% lower; 1.2x difference).
API cost decision in 10 seconds
Gemini 3 Flash Preview vs Kimi K2 Thinking
Pick Kimi K2 Thinking for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Kimi K2 Thinking for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Kimi K2 Thinking is estimated at $1.85 vs $2 for Gemini 3 Flash Preview, saving $0.15 (7.5% lower).
Cost-first pickKimi K2 Thinking
Context-first pickGemini 3 Flash Preview
Sample savings$0.157.5%
10x traffic gap$1.5
Gemini 3 Flash Preview has more context, but Kimi K2 Thinking saves $0.15 on the standard workload. At 10x that traffic, the same price gap is about $1.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Gemini 3 Flash Preview, balanced workload favors Kimi K2 Thinking, and output-heavy chatbot favors Kimi K2 Thinking.
| Workload shape | Token mix | Better pick | Gemini 3 Flash Preview | Kimi K2 Thinking |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Gemini 3 Flash Preview | $4 | $4.25 |
| Balanced workload | 1M input + 1M output | Kimi K2 Thinking | $3.5 | $3.1 |
| Output-heavy chatbot | 1M input + 5M output | Kimi K2 Thinking | $15.5 | $13.1 |
Kimi K2 Thinking is $0.5 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
Gemini 3 Flash Preview has 786.43K more context (4x larger).
Kimi K2 Thinking is $0.15 cheaper on the standard workload (7.5% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Gemini 3 Flash Preview has the lower input price; Kimi K2 Thinking has the lower output price; Gemini 3 Flash Preview offers the larger context window. For the 1M input plus 500K output sample, Kimi K2 Thinking is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $2 for Gemini 3 Flash Preview and $1.85 for Kimi K2 Thinking.
Choose Gemini 3 Flash Preview when you care most about lower input-token price, and larger context window.
Choose Kimi K2 Thinking when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, Kimi K2 Thinking is estimated at $1.85 vs $2 for Gemini 3 Flash Preview, saving $0.15 (7.5% lower).
- Kimi K2 Thinking is $0.15 cheaper on the standard workload (7.5% lower).
- Gemini 3 Flash Preview is $0.1 cheaper per 1M input tokens (16.7% lower; 1.2x difference).
- Kimi K2 Thinking is $0.5 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
- Gemini 3 Flash Preview has 786.43K more context (4x larger).
| Feature | Gemini 3 Flash Preview (Google) | Kimi K2 Thinking (MoonshotAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.5 | $0.6 |
| Completion Price per 1M tokens | $3 | $2.5 |
| Sample Workload Cost 1M input + 500K output | $2 | $1.85 |
| Context Window | 1.05M | 262.14K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Kimi K2 Thinking | On the standard 1M input plus 500K output workload, Kimi K2 Thinking is estimated at $1.85 vs $2 for Gemini 3 Flash Preview, saving $0.15 (7.5% lower). |
| High-volume input processing | Gemini 3 Flash Preview | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Kimi K2 Thinking | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 3 Flash Preview | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Gemma 4 26B A4B (free) can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Gemini 3 Flash Preview when lower sample workload cost matters most: $0.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
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Open provider hubsGoogle catalog
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Open MoonshotAI modelsGemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...
Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...