Independent register of AI agents & harnesses · no sponsored placementsEdition 2026-09 · 107 entries · evidence to 26 Sept 2026

Compare / OpenCode vs Claude Code

OpenCode vs Claude Code

OpenCode rates 75 against Claude Code's 73 in this edition. The table lines up every dimension we record; the leading value in each numeric row is marked. Add a third or fourth entry.

Dimension
OpenCodeAnomaly
Claude CodeAnthropic
Rating
AgentsWisdom score7573
Confidencehighhigh
Rank in categoryNo. 1 of 16No. 2 of 16
Pillars
Adoption & momentum9597
Experts (independent reviews)7168
Crowd (community sample)5346
Community posts sampled2317
Experts vs crowdCrowd cooler by 17Crowd cooler by 22
Adoption
GitHub stars210k148k
npm weekly downloads2.2M12M
PyPI monthly downloadsn/en/e
VS Code installsn/e26M
Reported users16Mn/e
Reported customer organisationsn/en/e
Releases, last 90 days4275
Benchmarks (shown, not scored)
Terminal-Bench 2.0No. 36 of 43 · 51.69%
OpenCode + Claude Opus 4.5
No. 31 of 43 · 57.98%
Claude Code + Claude Opus 4.6
SWE-benchnot listednot listed
Independent reviews98
Trust & safety
Overall gradeBB
Permission modelCC
Data access scopeAA
Data storageAB
Data retention & trainingn/eC
Incident historyCC
ComplianceDA
TransparencyAB
Price
PriceFree, paid from $10From $20
Plans
  • Free (BYOK): Free
  • OpenCode Go: $10 / monthly
  • OpenCode Zen: Custom
  • Enterprise: Custom
  • Free: $0 (see notes)
  • Pro: $20 / monthly
  • Max 5x: $100 / monthly
  • Max 20x: Custom
  • Team Standard seat: $25 / monthly
  • Team Premium seat: $125 / monthly
  • Enterprise / API: Custom
Product
CategoryCoding agentsCoding agents
MakerAnomalyAnthropic
LicenceMITproprietary
Use it viaCLI, Desktop app, IDE extension, Web appCLI, IDE extension, Desktop app, Web app, Mobile app, API
Runs onmacos, linux, windowsmacos, linux, windows, web
Models it drivesClaude, GPT, Gemini, Kimi, DeepSeek, GLM, Qwen, local models, any OpenAI-compatibleClaude
Key features
  • Terminal UI, desktop app and IDE extension
  • Bring-your-own-key across many providers plus local models
  • Plan and Build agent modes
  • LSP integration
  • Configurable allow/ask/deny permissions per tool, with external_directory scoping
  • Optional session sharing via /share
  • Optional paid model access via OpenCode Zen and OpenCode Go
  • Terminal CLI plus VS Code and JetBrains extensions, desktop, web and mobile surfaces
  • Permission modes: Manual, Accept Edits, auto mode (classifier-reviewed) and others
  • Opt-in OS-level Bash sandbox (Seatbelt on macOS; Linux and WSL2 supported; native Windows not)
  • Cloud sessions in isolated Anthropic-managed VMs
  • Subagents, hooks, skills, plugins and MCP server support
  • Claude Agent SDK for building custom agents on the same harness
Verdicts
Praised for
  • Model freedom: one config change to switch provider or run locally (Composio, heyuan110)
  • Low-cost access through the $10 Go plan (Thomas Wiegold; multiple HN users)
  • Works reasonably well across many models out of the box (HN)
  • Widely treated by practitioners as a reference coding agent and daily driver (Simon Willison; HN comments)
  • Deep configurability through CLAUDE.md, skills and hooks rewards investment (Composio 100+ hour comparison)
  • Explains its own changes well enough to support review workflows (Every / Kieran Klaassen)
Criticised for
  • Fast release cadence brings regressions (AICoderScope)
  • High memory/CPU use reported (GitHub Memory Megathread; HN)
  • Repeated serious security advisories in 2026, including unauthenticated command execution
  • Security track record judged weaker than Claude Code (heyuan110)
  • Frequent complaints about usage limits and token burn on subscription plans (HN, r/ClaudeCode)
  • Long record of security advisories in the CLI (about 30 GHSA/CVE entries in 24 months) plus a March 2026 source-map leak
  • Auto mode default relies on a classifier that has been bypassed in published research (Johann Rehberger via Simon Willison)
  • Terminal UI performance complaints such as freezing and memory use (Douglas Mendes; HN)
Evidence
Evidence collected26 Sept 202626 Sept 2026
Sources cited84