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Tessl

high confidence updated 2026-08-27 company · evaluation

Tessl

AI developer tools and software engineering research organization based in London, UK. Tessl conducts empirical research on agentic software development, benchmark alignment, and autonomous system harnesses. [source: tessl-coding-benchmarks-misaligned-system-harness-2026]

Research & Frameworks

  • Position on Coding Benchmarks: Tessl researchers (Maria I. Gorinova, Dru Knox, Amy Heineike, et al.) authored the foundational 2026 ACM SIGKDD position paper arguing that pre-agent coding benchmarks (SWE-Bench, HumanEval) fail to evaluate real-world agentic software engineering because they conflate raw model capability with the composite system harness. [source: tessl-coding-benchmarks-misaligned-system-harness-2026]
  • NS2 System Harness: An open-source, issue-driven multi-agent harness treating GitHub issues as the state machine for task decomposition, execution, test quality validation, and multi-tier feedback loops. [source: tessl-coding-benchmarks-misaligned-system-harness-2026]
Evidence — verified primary sources
tessl-coding-benchmarks-misaligned-system-harness-2026 https://arxiv.org/abs/2606.17799
ingested 2026-08-27
sha256:4b68e983226a…