KAT-Coder-Air V2.5 vs Muse Spark 1.1
| Signal | KAT-Coder-Air V2.5 | Delta | Muse Spark 1.1 |
|---|---|---|---|
Capabilities | 50 | -50 | |
Pricing | 99 | +4 | |
Context window size | 86 | -10 | |
Recency | 100 | -- | |
Output Capacity | 78 | -17 | |
Benchmarks | 0 | -79 | |
| Overall Result | 1 wins | of 6 | 4 wins |
Score History
40
current score
Muse Spark 1.1
right now
80.6
current score
KAT-Coder-Air V2.5
Kuaishou
Muse Spark 1.1
meta
KAT-Coder-Air V2.5 saves you $292.50/month
That's $3510.00/year compared to Muse Spark 1.1 at your current usage level of 100K calls/month.
| Metric | KAT-Coder-Air V2.5 | Muse Spark 1.1 | Winner |
|---|---|---|---|
| Overall Score | 40 | 81 | Muse Spark 1.1 |
| Rank | #237 | #67 | Muse Spark 1.1 |
| Quality Rank | #237 | #67 | Muse Spark 1.1 |
| Adoption Rank | #237 | #67 | Muse Spark 1.1 |
| Parameters | -- | -- | -- |
| Context Window | 256K | 1049K | Muse Spark 1.1 |
| Pricing | $0.15/$0.60/M | $1.25/$4.25/M | -- |
| Signal Scores | |||
| Capabilities | 50 | 100 | Muse Spark 1.1 |
| Pricing | 99 | 96 | KAT-Coder-Air V2.5 |
| Context window size | 86 | 96 | Muse Spark 1.1 |
| Recency | 100 | 100 | KAT-Coder-Air V2.5 |
| Output Capacity | 78 | 96 | Muse Spark 1.1 |
| Benchmarks | -- | 79 | Muse Spark 1.1 |
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 #237), placing it in the top 19% of all 290 models tracked.
Scores 81/100 (rank #67), placing it in the top 77% of all 290 models tracked.
Muse Spark 1.1 has a 41-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose KAT-Coder-Air V2.5 when you need:
- High-volume production workloads where API costs must be minimized
Choose Muse Spark 1.1 when you need:
- Processing long documents or large codebases (1049K token context)
- Multimodal workflows that require image understanding
- Step-by-step reasoning and chain-of-thought problem solving
KAT-Coder-Air V2.5 offers 86% better value per quality point. At 1M tokens/day, you'd spend $11.25/month with KAT-Coder-Air V2.5 vs $82.50/month with Muse Spark 1.1 - a $71.25 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. KAT-Coder-Air V2.5 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.60/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (81/100) 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
Muse Spark 1.1 clearly outperforms KAT-Coder-Air V2.5 with a significant 40.599999999999994-point lead. For most general use cases, Muse Spark 1.1 is the stronger choice. However, KAT-Coder-Air V2.5 may still excel in niche scenarios.
By Use Case
Best for Quality
KAT-Coder-Air V2.5
Marginally better benchmark scores; both are excellent
Best for Cost
KAT-Coder-Air V2.5
86% lower pricing; better value at scale
Best for Reliability
KAT-Coder-Air V2.5
Higher uptime and faster response speeds
Best for Prototyping
KAT-Coder-Air V2.5
Stronger community support and better developer experience
Best for Production
KAT-Coder-Air V2.5
Wider enterprise adoption and proven at scale
by Kuaishou
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 86% lower pricing; better value at scale
- 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 | KAT-Coder-Air V2.5 | Muse Spark 1.1 |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Searchdiffers | ||
| Image Output |
KAT-Coder-Air V2.5
Kuaishou
Muse Spark 1.1
meta
KAT-Coder-Air V2.5 saves you $6.36/month
That's 87% cheaper than Muse Spark 1.1 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 | KAT-Coder-Air V2.5 | Muse Spark 1.1 |
|---|---|---|
| Context Window | 256K | 1.0M |
| Max Output Tokens | 80,000 | 943,718 |
| Open Source | No | No |
| Created | Jul 10, 2026 | Jul 16, 2026 |