Kimi K3.1 Pro vs Flint (free)
| Signal | Kimi K3.1 Pro | Delta | Flint (free) |
|---|---|---|---|
Capabilities | 83 | +17 | |
Pricing | 90 | -10 | |
Context window size | 96 | +10 | |
Recency | 100 | -- | |
Output Capacity | 96 | +10 | |
| Overall Result | 3 wins | of 5 | 1 wins |
Score History Unavailable
Not enough historical data to show a comparison chart. Score history is recorded weekly and will be available after at least two data points are collected.
40
Kimi K3.1 Pro
40
Flint (free)
Kimi K3.1 Pro
Moonshot AI
Flint (free)
recursive
Flint (free) saves you $700.00/month
That's $8400.00/year compared to Kimi K3.1 Pro at your current usage level of 100K calls/month.
| Metric | Kimi K3.1 Pro | Flint (free) | Winner |
|---|---|---|---|
| Overall Score | 40 | 40 | -- |
| Rank | #180 | #181 | Kimi K3.1 Pro |
| Quality Rank | #180 | #181 | Kimi K3.1 Pro |
| Adoption Rank | #180 | #181 | Kimi K3.1 Pro |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 262K | Kimi K3.1 Pro |
| Pricing | $2.00/$10.00/M | Free | -- |
| Signal Scores | |||
| Capabilities | 83 | 67 | Kimi K3.1 Pro |
| Pricing | 90 | 100 | Flint (free) |
| Context window size | 96 | 86 | Kimi K3.1 Pro |
| Recency | 100 | 100 | Kimi K3.1 Pro |
| Output Capacity | 96 | 86 | Kimi K3.1 Pro |
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 #180), placing it in the top 38% of all 290 models tracked.
Scores 40/100 (rank #181), placing it in the top 38% 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 Kimi K3.1 Pro 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
Choose Flint (free) when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
Both models are priced similarly, so the decision comes down to quality and features rather than cost.
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. Flint (free) 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 ($0.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (40/100) 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 K3.1 Pro and Flint (free) 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
Kimi K3.1 Pro
Marginally better benchmark scores; both are excellent
Best for Cost
Flint (free)
100% lower pricing; better value at scale
Best for Reliability
Kimi K3.1 Pro
Higher uptime and faster response speeds
Best for Prototyping
Kimi K3.1 Pro
Stronger community support and better developer experience
Best for Production
Kimi K3.1 Pro
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 K3.1 Pro | Flint (free) |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Kimi K3.1 Pro
Moonshot AI
Flint (free)
recursive
Flint (free) saves you $15.60/month
That's 100% cheaper than Kimi K3.1 Pro 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 K3.1 Pro | Flint (free) |
|---|---|---|
| Context Window | 1.0M | 262K |
| Max Output Tokens | 943,718 | 235,929 |
| Open Source | No | Yes |
| Created | Oct 23, 2026 | Oct 21, 2026 |