Bend is a high-performance programming language designed to ensure code correctness through formal proofs, effectively blocking AI-generated mistakes. Created by Higher Order Computing Company, Bend combines Python-like syntax with features that allow developers to define laws and verify that their code adheres to them mathematically. This approach turns software correctness into a theorem, making it impossible to merge code that violates predefined application rules. Bend is optimized for speed, compiling to native code that performs near C-speed on single cores and scales automatically to utilize multicore CPUs and massive GPU parallelism without manual threading or locking.

Functionality: Bend allows users to specify application requirements in a LAWS.bend file, which the compiler uses to verify code. When coupled with Bender, an AI-powered proving agent, the language can automatically repair and verify proofs for PROOF.bend files after code changes, ensuring that the application remains bug-free and compliant with its original intent.

Some of the key features are:

• High Performance: Compiles to native code with efficiency comparable to C and supports transparent execution on CPUs and GPUs.
• Proof-Backed Correctness: Uses an affine dependent type theory to verify that application code follows stated laws.
• Automatic Parallelism: Automatically distributes workloads across all available CPU cores and thousands of GPU cores without requiring explicit thread or kernel management.
• Python-like Syntax: Offers a familiar, readable programming interface suitable for modern developer workflows.
• Bender Agent Integration: Provides a specialized AI-proving agent designed to reduce token usage and time-to-proof when maintaining complex codebases.

Operation: To use Bend, developers install the toolset and integrate it into their AI coding agents by referencing LAWS.bend and PROOF.bend in their project documentation. As code changes occur, the Bend compiler and the Bender agent evaluate the logic against established proofs. If a law is violated, the system prevents the code from being merged until the proof is restored. The language ecosystem also includes BendHub, a package repository for sharing and discovering Bend-based code.

Some common use cases include:

• Mission-Critical Applications: Enforcing strict logical boundaries in systems where software bugs could lead to failure or security vulnerabilities.
• Complex Game Logic: Defining rules that prevent invalid move sequences or illegal states by treating game constraints as mathematical theorems.
• Parallel Compute Tasks: Offloading heavy computational workloads to GPUs automatically without the overhead of writing complex CUDA or threading code.