Model Comparison

Kimi K3 vs Nova ProWhich is better in 2026?

Kimi K3 significantly outperforms across most benchmarks. Nova Pro is 4.3x cheaper per token.

Verdict: Kimi K3 vs Nova Pro — which is better?

Kimi K3 (by Moonshot AI) and Nova Pro (by Amazon) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Kimi K3 outperforms in 1 benchmarks (GPQA), while Nova Pro is better at 0 benchmarks. Kimi K3 significantly outperforms across most benchmarks.

On price, Nova Pro is roughly 4.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Kimi K3 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Kimi K3 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jul 2026

Choose Nova Pro if…

  • cost matters — it's about 4.3x cheaper per token

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Kimi K3 outperforms in 1 benchmarks (GPQA), while Nova Pro is better at 0 benchmarks.

Kimi K3 significantly outperforms across most benchmarks.

Mon Jul 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Nova Pro costs less

For input processing, Kimi K3 ($3.00/1M tokens) is 3.8x more expensive than Nova Pro ($0.80/1M tokens).

For output processing, Kimi K3 ($15.00/1M tokens) is 4.7x more expensive than Nova Pro ($3.20/1M tokens).

In conclusion, Kimi K3 is more expensive than Nova Pro.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Jul 20 2026 • llm-stats.com
Moonshot AI
Kimi K3
Input tokens$3.00
Output tokens$15.00
Best providerUnknown Organization
Amazon
Nova Pro
Input tokens$0.80
Output tokens$3.20
Best providerAWS Bedrock
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Kimi K3 accepts 1,048,576 input tokens compared to Nova Pro's 300,000 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Nova Pro is limited to 300,000 tokens.

Moonshot AI
Kimi K3
Input1,048,576 tokens
Output1,048,576 tokens
Amazon
Nova Pro
Input300,000 tokens
Output300,000 tokens
Mon Jul 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Kimi K3 and Nova Pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Kimi K3

Text
Images
Audio
Video

Nova Pro

Text
Images
Audio
Video

Release Timeline

When each model was launched

Kimi K3 was released on 2026-07-16, while Nova Pro was released on 2024-11-20.

Kimi K3 is 20 months newer than Nova Pro.

Kimi K3

Jul 16, 2026

4 days ago

1.7yr newer
Nova Pro

Nov 20, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Kimi K3 is available from Moonshot AI. Nova Pro is available from Bedrock.

Kimi K3

moonshot logo
Unknown Organization
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Nova Pro

bedrock logo
AWS Bedrock
Input Price:Input: $0.80/1MOutput Price:Output: $3.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Moonshot AI
Larger context window (1,048,576 tokens)
Has open weights
Higher GPQA score (93.5% vs 46.9%)
Amazon
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Kimi K3 and Nova Pro side-by-side, then vote on the output you prefer.

Kimi K3
✓ Preferred
Nova Pro
Open in Playground
AI Model Comparison Table
Feature
Moonshot AI
Kimi K3
Amazon
Nova Pro

FAQ

Common questions about Kimi K3 vs Nova Pro.

Which is better, Kimi K3 or Nova Pro?

Kimi K3 significantly outperforms across most benchmarks. Kimi K3 is made by Moonshot AI and Nova Pro is made by Amazon. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Kimi K3 compare to Nova Pro in benchmarks?

Kimi K3 scores MathVision: 97.8%, DeepSearchQA: 95.0%, GPQA: 93.5%, CharXiv-R: 91.3%, BrowseComp: 91.2%. Nova Pro scores ARC-C: 94.8%, GSM8k: 94.8%, DocVQA: 93.5%, IFEval: 92.1%, ChartQA: 89.2%.

Is Kimi K3 cheaper than Nova Pro?

Nova Pro is 3.8x cheaper for input tokens. Kimi K3 costs $3.00/M input and $15.00/M output via moonshot. Nova Pro costs $0.80/M input and $3.20/M output via bedrock.

What are the context window sizes for Kimi K3 and Nova Pro?

Kimi K3 supports 1.0M tokens and Nova Pro supports 300K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Kimi K3 and Nova Pro?

Key differences include context window (1.0M vs 300K), input pricing ($3.00 vs $0.80/M), licensing (Unknown vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Kimi K3 and Nova Pro?

Kimi K3 is developed by Moonshot AI and Nova Pro is developed by Amazon.

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