GPT-4.1 Nano vs Kimi K2.5
| Signal | GPT-4.1 Nano | Delta | Kimi K2.5 |
|---|---|---|---|
Capabilities | 83 | -- | |
Benchmarks | 44 | +44 | |
Pricing | 100 | +2 | |
Context window size | 96 | +10 | |
Recency | 41 | -52 | |
Output Capacity | 72 | -14 | |
| Overall Result | 3 wins | of 6 | 2 wins |
Score History
42.1
current score
Kimi K2.5
right now
47.5
current score
GPT-4.1 Nano
OpenAI
Kimi K2.5
Moonshot AI
GPT-4.1 Nano saves you $127.50/month
That's $1530.00/year compared to Kimi K2.5 at your current usage level of 100K calls/month.
| Metric | GPT-4.1 Nano | Kimi K2.5 | Winner |
|---|---|---|---|
| Overall Score | 42 | 48 | Kimi K2.5 |
| Rank | #229 | #227 | Kimi K2.5 |
| Quality Rank | #229 | #227 | Kimi K2.5 |
| Adoption Rank | #229 | #227 | Kimi K2.5 |
| Parameters | -- | -- | -- |
| Context Window | 1048K | 262K | GPT-4.1 Nano |
| Pricing | $0.10/$0.40/M | $0.45/$2.25/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 83 | GPT-4.1 Nano |
| Benchmarks | 44 | -- | GPT-4.1 Nano |
| Pricing | 100 | 98 | GPT-4.1 Nano |
| Context window size | 96 | 86 | GPT-4.1 Nano |
| Recency | 41 | 93 | Kimi K2.5 |
| Output Capacity | 72 | 86 | Kimi K2.5 |
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 42/100 (rank #229), placing it in the top 21% of all 290 models tracked.
Scores 48/100 (rank #227), placing it in the top 22% of all 290 models tracked.
Kimi K2.5 has a 5-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
Choose GPT-4.1 Nano when you need:
- High-volume production workloads where API costs must be minimized
- Processing long documents or large codebases (1048K token context)
Choose Kimi K2.5 when you need:
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
GPT-4.1 Nano offers 81% better value per quality point. At 1M tokens/day, you'd spend $7.50/month with GPT-4.1 Nano vs $40.50/month with Kimi K2.5 - a $33.00 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. GPT-4.1 Nano also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1048K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.40/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (48/100) 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
Kimi K2.5 has a moderate advantage with a 5.399999999999999-point lead in composite score. It wins on more signal dimensions, but GPT-4.1 Nano has specific strengths that could make it the better choice for certain workflows.
By Use Case
Best for Quality
GPT-4.1 Nano
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-4.1 Nano
81% lower pricing; better value at scale
Best for Reliability
GPT-4.1 Nano
Higher uptime and faster response speeds
Best for Prototyping
GPT-4.1 Nano
Stronger community support and better developer experience
Best for Production
GPT-4.1 Nano
Wider enterprise adoption and proven at scale
by OpenAI
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 81% 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 | GPT-4.1 Nano | Kimi K2.5 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Searchdiffers | ||
| Image Output |
GPT-4.1 Nano
OpenAI
Kimi K2.5
Moonshot AI
GPT-4.1 Nano saves you $2.85/month
That's 81% cheaper than Kimi K2.5 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 | GPT-4.1 Nano | Kimi K2.5 |
|---|---|---|
| Context Window | 1.0M | 262K |
| Max Output Tokens | 32,768 | 235,929 |
| Open Source | No | Yes |
| Created | Apr 14, 2025 | Jan 27, 2026 |