Kimi K2.5 is $2.1 cheaper per 1M input tokens (84% lower; 6.25x difference).
API cost decision in 10 seconds
Kimi K2.5 vs Nova Premier 1.0
Pick Kimi K2.5 for lower cost; pick Nova Premier 1.0 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 K2.5 for lower cost; pick Nova Premier 1.0 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Kimi K2.5 is estimated at $1.35 vs $8.75 for Nova Premier 1.0, saving $7.4 (84.6% lower).
Cost-first pickKimi K2.5
Context-first pickNova Premier 1.0
Sample savings$7.484.6%
10x traffic gap$74
Nova Premier 1.0 has more context, but Kimi K2.5 saves $7.4 on the standard workload. At 10x that traffic, the same price gap is about $74. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Kimi K2.5 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Kimi K2.5 | Nova Premier 1.0 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Kimi K2.5 | $2.95 | $18.75 |
| Balanced workload | 1M input + 1M output | Kimi K2.5 | $2.3 | $15 |
| Output-heavy chatbot | 1M input + 5M output | Kimi K2.5 | $9.9 | $65 |
Kimi K2.5 is $10.6 cheaper per 1M output tokens (84.8% lower; 6.58x difference).
Nova Premier 1.0 has 737.86K more context (3.81x larger).
Kimi K2.5 is $7.4 cheaper on the standard workload (84.6% 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
Kimi K2.5 has the lower input price; Kimi K2.5 has the lower output price; Nova Premier 1.0 offers the larger context window. For the 1M input plus 500K output sample, Kimi K2.5 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.35 for Kimi K2.5 and $8.75 for Nova Premier 1.0.
Choose Kimi K2.5 when you care most about lower input-token price, and lower output-token price.
Choose Nova Premier 1.0 when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Kimi K2.5 is estimated at $1.35 vs $8.75 for Nova Premier 1.0, saving $7.4 (84.6% lower).
- Kimi K2.5 is $7.4 cheaper on the standard workload (84.6% lower).
- Kimi K2.5 is $2.1 cheaper per 1M input tokens (84% lower; 6.25x difference).
- Kimi K2.5 is $10.6 cheaper per 1M output tokens (84.8% lower; 6.58x difference).
- Nova Premier 1.0 has 737.86K more context (3.81x larger).
| Feature | Kimi K2.5 (MoonshotAI) | Nova Premier 1.0 (Amazon) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.4 | $2.5 |
| Completion Price per 1M tokens | $1.9 | $12.5 |
| Sample Workload Cost 1M input + 500K output | $1.35 | $8.75 |
| Context Window | 262.14K | 1M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Kimi K2.5 | On the standard 1M input plus 500K output workload, Kimi K2.5 is estimated at $1.35 vs $8.75 for Nova Premier 1.0, saving $7.4 (84.6% lower). |
| High-volume input processing | Kimi K2.5 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Kimi K2.5 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Nova Premier 1.0 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Nova Micro 1.0 can replace Nova Premier 1.0 when lower sample workload cost matters most: $0.11.
- Nova Lite 1.0 can replace Nova Premier 1.0 when lower sample workload cost matters most: $0.18.
- Nova 2 Lite can replace Nova Premier 1.0 when lower sample workload cost matters most: $1.55.
- Nova Pro 1.0 can replace Nova Premier 1.0 when lower sample workload cost matters most: $2.4.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- GPT-5.4 offers 1.05M context with $10 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 modelsAmazon catalog
Check other Amazon models with comparable pricing, context, or release timing.
Open Amazon modelsKimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed...
Amazon Nova Premier is the most capable of Amazon’s multimodal models for complex reasoning tasks and for use as the best teacher for distilling custom models.