Solar Pro 3 is $0.58 cheaper per 1M input tokens (79.5% lower; 4.87x difference).
API cost decision in 10 seconds
Kimi K2.6 vs Solar Pro 3
Pick Solar Pro 3 for lower cost; pick Kimi K2.6 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 Solar Pro 3 for lower cost; pick Kimi K2.6 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Solar Pro 3 is estimated at $0.45 vs $2.48 for Kimi K2.6, saving $2.03 (81.8% lower).
Cost-first pickSolar Pro 3
Context-first pickKimi K2.6
Sample savings$2.0381.8%
10x traffic gap$20.25
Kimi K2.6 has more context, but Solar Pro 3 saves $2.03 on the standard workload. At 10x that traffic, the same price gap is about $20.25. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Solar Pro 3 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Kimi K2.6 | Solar Pro 3 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Solar Pro 3 | $5.39 | $1.05 |
| Balanced workload | 1M input + 1M output | Solar Pro 3 | $4.22 | $0.75 |
| Output-heavy chatbot | 1M input + 5M output | Solar Pro 3 | $18.18 | $3.15 |
Solar Pro 3 is $2.89 cheaper per 1M output tokens (82.8% lower; 5.82x difference).
Kimi K2.6 has 134.14K more context (2.05x larger).
Solar Pro 3 is $2.03 cheaper on the standard workload (81.8% 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
Solar Pro 3 has the lower input price; Solar Pro 3 has the lower output price; Kimi K2.6 offers the larger context window. For the 1M input plus 500K output sample, Solar Pro 3 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $2.48 for Kimi K2.6 and $0.45 for Solar Pro 3.
Choose Kimi K2.6 when you care most about larger context window.
Choose Solar Pro 3 when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Solar Pro 3 is estimated at $0.45 vs $2.48 for Kimi K2.6, saving $2.03 (81.8% lower).
- Solar Pro 3 is $2.03 cheaper on the standard workload (81.8% lower).
- Solar Pro 3 is $0.58 cheaper per 1M input tokens (79.5% lower; 4.87x difference).
- Solar Pro 3 is $2.89 cheaper per 1M output tokens (82.8% lower; 5.82x difference).
- Kimi K2.6 has 134.14K more context (2.05x larger).
| Feature | Kimi K2.6 (MoonshotAI) | Solar Pro 3 (Upstage) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.73 | $0.15 |
| Completion Price per 1M tokens | $3.49 | $0.6 |
| Sample Workload Cost 1M input + 500K output | $2.48 | $0.45 |
| Context Window | 262.14K | 128K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Solar Pro 3 | On the standard 1M input plus 500K output workload, Solar Pro 3 is estimated at $0.45 vs $2.48 for Kimi K2.6, saving $2.03 (81.8% lower). |
| High-volume input processing | Solar Pro 3 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Solar Pro 3 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Kimi K2.6 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Kimi K2.5 can replace Kimi K2.6 when lower sample workload cost matters most: $1.35.
- Kimi K2 0711 can replace Kimi K2.6 when lower sample workload cost matters most: $1.72.
- Kimi K2 Thinking can replace Kimi K2.6 when lower sample workload cost matters most: $1.85.
- Kimi K2 0905 can replace Kimi K2.6 when lower sample workload cost matters most: $1.85.
- 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.
- Gemini 3.1 Flash Lite offers 1.05M context with $1 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.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsMoonshotAI catalog
Review all tracked MoonshotAI models before deciding whether this matchup is the right shortlist.
Open MoonshotAI modelsUpstage catalog
Check other Upstage models with comparable pricing, context, or release timing.
Open Upstage modelsKimi K2.6 is Moonshot AI's next-generation multimodal model, designed for long-horizon coding, coding-driven UI/UX generation, and multi-agent orchestration. It handles complex end-to-end coding tasks across Python, Rust, and Go, and...
Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performance while maintaining computational efficiency. Optimized...