Inkling Small vs KAT-Coder-Pro V2.5 compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.
KAT-Coder-Pro V2.5 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
| Spec | Inkling Small | KAT-Coder-Pro V2.5 | Winner |
|---|---|---|---|
| Maker | Thinkingmachines | Kwaipilot | – |
| Type | Open-weight | Proprietary | THInkling Small |
| Context window | 1M tokens | 262K tokens | THInkling Small |
| Input price | $0.45/M · free self-host | $0.74/M | THInkling Small |
| Output price | $1.2/M · free self-host | $2.96/M | THInkling Small |
| Vision / multimodal | Yes | No | THInkling Small |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | Yes | No (API only) | THInkling Small |
| License | Open weights | Proprietary | THInkling Small |
Inkling Small is ~2.5× cheaper than KAT-Coder-Pro V2.5 on output tokens ($1.2 vs $2.96 per M tokens).
| Capability | Inkling Small | KAT-Coder-Pro V2.5 |
|---|---|---|
| Open weights (downloadable) | ✓ | ✗ |
| Self-hostable | ✓ | ✗ |
| Runs fully offline | ✓ | ✗ |
| Vision / multimodal | ✓ | ✗ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
| Criterion | Inkling Small | KAT-Coder-Pro V2.5 |
|---|---|---|
| Cost-efficiency | 4.5 | 4.5 |
| Context window | 5.0 | 4.0 |
| Openness | 5.0 | 1.5 |
| Self-hosting | 5.0 | 1.0 |
| Multimodality | 5.0 | 3.5 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
Inkling Small is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 12B active parameters out of 276B total. It is positioned as the smaller, more efficient member of...
KAT-Coder-Pro V2.5 is a flagship-level Agentic Coding model that can directly hand over an entire issue or an entire business workflow to it, allowing it to autonomously locate and make...
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Inkling Small is open-weight and competitive on many tasks, but KAT-Coder-Pro V2.5 may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.
Yes. Inkling Small has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. KAT-Coder-Pro V2.5 is API-only and cannot be self-hosted.
Inkling Small costs $1.2/M output vs $2.96/M for KAT-Coder-Pro V2.5 — roughly 2x cheaper via API, and free if you self-host.
Choose Inkling Small if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose KAT-Coder-Pro V2.5 if you want frontier capability through a managed API with zero infrastructure to run.
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