Unverified50% confidenceFactExact time
Proofsource offers a free starter plan: 25 questions, coverage across 4 engines, and no credit card required.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/7/2026
First Seen
Valid until: 1/5/2027
Sources
Related Entities
Related Claims
UnverifiedFreebuff achieves its free offering by selecting open-source large models as the underlying engine, avoiding the token call costs of closed-source APIs.62% similarUnverified开源CFD工具OpenFOAM基于有限体积法离散求解偏微分方程，支持并行计算，核心代码库已积累超过150个求解器56% similarUnverifiedFull open source requires the public disclosure of training datasets, training code, evaluation frameworks, and all technical documentation, theoretically allowing anyone to reproduce the entire model from scratch.55% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/984569API
curl https://kongchang.com/api/v1/knowledge/claims/984569MCP
get_claim(id=984569)