Prisma 7 performance is actually worse than Prisma 6

### Bug description # Prisma 6 vs Prisma 7 Performance Benchmark Report ## Reproduction Repository: https://github.com/MikaelEdebro/prisma7-benchmarks ## Test Environment - **OS**: macOS - **Database**: PostgreSQL (tested both with local & hosted Postgres instance) - **Connection pool**: 10 connections for both versions - **Virtual Users**: 50 concurrent users - **Test Duration**: 60 seconds per version (sequential) - **Framework**: NestJS with K6 load testing --- These analysis is made by GitHub Copilot, after analysing the results of the K6 load tests. ## Read-Heavy Benchmark Results | Metric | Prisma 6 | Prisma 7 | Difference | | -------------------- | -------- | -------- | ------------------------------------- | | **List Posts (avg)** | 6.14ms | 10.23ms | Prisma 6 is **40% faster** | | **List Posts (p95)** | 8.78ms | 13.86ms | Prisma 6 is **37% faster** | | **Get By ID (avg)** | 4.68ms | 7.39ms | Prisma 6 is **37% faster** | | **Get By ID (p95)** | 6.36ms | 9.73ms | Prisma 6 is **35% faster** | | **Total Reads** | 635,290 | 404,000 | Prisma 6 handled **57% more reads** | | **Reads/second** | 5,278/s | 3,356/s | Prisma 6 is **57% higher throughput** | --- ## Write-and-Read Benchmark Results | Metric | Prisma 6 | Prisma 7 | Difference | | --------------------- | -------- | -------- | -------------------------- | | **

Posted by MikaelEdebro on Dec 4, 2025, 10:21 AM

Tags

• github (Software)

Related issues

• [Meta] Feedback on granular control over Copilot changes
• unexpected status 401 Unauthorized issue
• [MODEL] Measurable quality regression in Claude generation 5 (Fable 5 / Opus 5 / Sonnet 5): worse nonsense detection, ~2x verbosity, under-disclosed model fallb
• [CRITICAL] Subagent spawning and subagent pattern bugs trigger infinite recursion, infinite token usage, grossly inefficient token usage, and lost accumulated s
• Video stops playing after some minutes
• [MODEL] Claude verbose code comments by default — ignores instructions to stop.