GPT-5.4 Mini vs Kimi K3
| Signal | GPT-5.4 Mini | Delta | Kimi K3 |
|---|---|---|---|
Capabilities | 100 | +17 | |
Benchmarks | 90 | +12 | |
Pricing | 96 | +11 | |
Context window size | 80 | -6 | |
Recency | 100 | -- | |
Output Capacity | 85 | +65 | |
| Overall Result | 4 wins | of 6 | 1 wins |
Score History
78.8
current score
Tied
right now
78.8
current score
GPT-5.4 Mini
OpenAI
Kimi K3
Moonshot AI
GPT-5.4 Mini saves you $750.00/month
That's $9000.00/year compared to Kimi K3 at your current usage level of 100K calls/month.
| Metric | GPT-5.4 Mini | Kimi K3 | Winner |
|---|---|---|---|
| Overall Score | 79 | 79 | -- |
| Rank | #63 | #61 | Kimi K3 |
| Quality Rank | #63 | #61 | Kimi K3 |
| Adoption Rank | #63 | #61 | Kimi K3 |
| Parameters | -- | -- | -- |
| Context Window | 400K | 1049K | Kimi K3 |
| Pricing | $0.75/$4.50/M | $3.00/$15.00/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 83 | GPT-5.4 Mini |
| Benchmarks | 90 | 78 | GPT-5.4 Mini |
| Pricing | 96 | 85 | GPT-5.4 Mini |
| Context window size | 80 | 86 | Kimi K3 |
| Recency | 100 | 100 | GPT-5.4 Mini |
| Output Capacity | 85 | 20 | GPT-5.4 Mini |
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 79/100 (rank #63), placing it in the top 79% of all 290 models tracked.
Scores 79/100 (rank #61), placing it in the top 79% of all 290 models tracked.
With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Choose GPT-5.4 Mini when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
Choose Kimi K3 when you need:
- Processing long documents or large codebases (1049K token context)
- Step-by-step reasoning and chain-of-thought problem solving
GPT-5.4 Mini offers 71% better value per quality point. At 1M tokens/day, you'd spend $78.75/month with GPT-5.4 Mini vs $270.00/month with Kimi K3 - a $191.25 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. GPT-5.4 Mini 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 ($4.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (79/100) 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
GPT-5.4 Mini and Kimi K3 are extremely close in overall performance (only 0 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
By Use Case
Best for Quality
GPT-5.4 Mini
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-5.4 Mini
71% lower pricing; better value at scale
Best for Reliability
GPT-5.4 Mini
Higher uptime and faster response speeds
Best for Prototyping
GPT-5.4 Mini
Stronger community support and better developer experience
Best for Production
GPT-5.4 Mini
Wider enterprise adoption and proven at scale
by OpenAI
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 71% 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-5.4 Mini | Kimi K3 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
GPT-5.4 Mini
OpenAI
Kimi K3
Moonshot AI
GPT-5.4 Mini saves you $16.65/month
That's 71% cheaper than Kimi K3 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-5.4 Mini | Kimi K3 |
|---|---|---|
| Context Window | 400K | 1.0M |
| Max Output Tokens | 128,000 | -- |
| Open Source | No | No |
| Created | Mar 17, 2026 | Jul 16, 2026 |