Kimi K3 (batch) vs Grok 4.20
| Signal | Kimi K3 (batch) | Delta | Grok 4.20 |
|---|---|---|---|
Capabilities | 83 | -17 | |
Pricing | 85 | -12 | |
Context window size | 96 | -4 | |
Recency | 100 | -- | |
Output Capacity | 96 | -4 | |
Benchmarks | 0 | -86 | |
| Overall Result | 0 wins | of 6 | 5 wins |
Score History
40
current score
Grok 4.20
right now
88.8
current score
Kimi K3 (batch)
Moonshot AI
Grok 4.20
xAI
Grok 4.20 saves you $800.00/month
That's $9600.00/year compared to Kimi K3 (batch) at your current usage level of 100K calls/month.
| Metric | Kimi K3 (batch) | Grok 4.20 | Winner |
|---|---|---|---|
| Overall Score | 40 | 89 | Grok 4.20 |
| Rank | #245 | #34 | Grok 4.20 |
| Quality Rank | #245 | #34 | Grok 4.20 |
| Adoption Rank | #245 | #34 | Grok 4.20 |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 2000K | Grok 4.20 |
| Pricing | $3.00/$15.00/M | $1.25/$2.50/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 100 | Grok 4.20 |
| Pricing | 85 | 98 | Grok 4.20 |
| Context window size | 96 | 100 | Grok 4.20 |
| Recency | 100 | 100 | Kimi K3 (batch) |
| Output Capacity | 96 | 100 | Grok 4.20 |
| Benchmarks | -- | 86 | Grok 4.20 |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 40/100 (rank #245), placing it in the top 16% of all 290 models tracked.
Scores 89/100 (rank #34), placing it in the top 89% of all 290 models tracked.
Grok 4.20 has a 49-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose Kimi K3 (batch) when you need:
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
Choose Grok 4.20 when you need:
- High-volume production workloads where API costs must be minimized
- Processing long documents or large codebases (2000K token context)
- Step-by-step reasoning and chain-of-thought problem solving
Grok 4.20 offers 79% better value per quality point. At 1M tokens/day, you'd spend $56.25/month with Grok 4.20 vs $270.00/month with Kimi K3 (batch) - a $213.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Grok 4.20 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($2.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Grok 4.20 clearly outperforms Kimi K3 (batch) with a significant 48.8-point lead. For most general use cases, Grok 4.20 is the stronger choice. However, Kimi K3 (batch) may still excel in niche scenarios.
By Use Case
Best for Quality
Kimi K3 (batch)
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4.20
79% lower pricing; better value at scale
Best for Reliability
Kimi K3 (batch)
Higher uptime and faster response speeds
Best for Prototyping
Kimi K3 (batch)
Stronger community support and better developer experience
Best for Production
Kimi K3 (batch)
Wider enterprise adoption and proven at scale
by Moonshot AI
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Kimi K3 (batch) | Grok 4.20 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
Kimi K3 (batch)
Moonshot AI
Grok 4.20
xAI
Grok 4.20 saves you $18.15/month
That's 78% cheaper than Kimi K3 (batch) at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Kimi K3 (batch) | Grok 4.20 |
|---|---|---|
| Context Window | 1.0M | 2M |
| Max Output Tokens | 943,718 | 1,800,000 |
| Open Source | Yes | No |
| Created | Jul 16, 2026 | Mar 31, 2026 |