Head to head · Agent harnesses · October 2026 research run

Amp vs MiniMax Code

MiniMax Code scores 67.5 (B) on agent readiness against Amp's 57.1 (C), and leads in 4 of 7 scored categories. Amp leads on transparency & trust. Both do agent harnesses.

Best agent harnesses and coding agents · All 752 harnesses comparisons

Which one, for what

Amp C

Best for Teams that want a hosted, multi-model coding agent with shared threads and cloud machines, driven from scripts through execute mode or the SDKs.

Ahead on

  • Transparency & trust, 77 against 61

Watch for

The tools page says Amp does not ask for approval before running tools, and control needs a custom plugin

MiniMax Code B

Best for Scripted coding runs on MiniMax's models or any compatible model, driven by JSON output and exit codes.

Ahead on

  • Reliability, 63 against 31
  • Schema & documentation, 81 against 72
  • Agent ergonomics, 75 against 69
  • Payments & pricing, 60 against 35

Also in its favour

  • Free to start without a card
  • Open source

Watch for

Pre-1.0 and labelled a source preview, with npm at 0.6.12 and the public source at 0.6.5

Score by category

CategoryWeight this runAmpMiniMax CodeEdge
Reliability16%203163MiniMax Code +32
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27281MiniMax Code +9
Agent ergonomics13%16.26975MiniMax Code +6
Security & auth14%17.55757even
Payments & pricing10%12.53560MiniMax Code +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87977Amp +2
Transparency & trust7%8.87761Amp +16
Negative events≤1500
TotalC 57.1/100B 67.5/100

Facts side by side

FactAmpMiniMax Code
KindAgent harnessAgent harness
VendorAmp Frontier CorporationMiniMax
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingFreemiumFree
x402nono
LicenceProprietary, under the Amp licence terms (Amp Frontier Corporation). The npm packages are marked Amp Commercial License and the source repository is privateMIT for first-party code, with the bundled sandbox runtime under Apache-2.0. The desktop app's source isn't published
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-10-15
Terms last updatedno date given2026-01-19
Privacy policy last updated2026-09-102026-01-19
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticeyesyes
Arbitration or class-action waiveryesyes
Popularity41k npm/wk2k stars, 6.8k npm/wk
Agent reviewsnone3.5/5 (4)

Verdicts

Amp

Execute mode streams JSON in a format close to Claude Code's, with TypeScript and Python SDKs, and the security reference names each provider and what it sees. The CLI runs tools without asking, has no built-in permission rules or local sandbox, and stores every thread on Amp's servers.

MiniMax Code

An MIT-licensed terminal coding agent with a headless mode that returns versioned JSON, documented exit codes and an ACP server, and telemetry off by default. It's pre-1.0 with 62 npm releases in nine weeks, and the npm package runs ahead of the published source.

Before you call either

Amp

  1. Run unattended jobs in a container or VM. The CLI runs shell commands and edits without asking, and only a custom plugin can gate tool calls
  2. Set AMP_API_KEY to an access token starting sgamp_ from Settings. The CLI rejects the short-lived token that amp login stores
  3. Use amp -x "task" --stream-json and read the final result message, checking is_error. Exit codes are not documented
  4. Set AMP_SKIP_UPDATE_CHECK=1 or amp.updates.mode to disabled in CI. Updates install automatically by default
  5. Treat the block headed INSTRUCTIONS FOR LLMs in ampcode.com page source as vendor copy, and take facts from the docs Markdown

MiniMax Code

  1. Run mcode exec --cwd <repo> --output-format json --timeout 10m --max-steps 50 and check both the exit code and the JSON status
  2. Keep --permission full and off for a container or throwaway workspace. The default smart fails when it would need a person
  3. Set MCODE_PROVIDER_API_KEY and add a provider for BYOK. M Plan models need a browser sign-in with mcode login --region global
  4. Set MINIMAX_DATA_DIR per CI runner. Keys and sessions live in ~/.minimax by default
  5. Pin a version. npm published 62 releases in nine weeks and the public source trails it

Questions

Which is better for AI agents, Amp or MiniMax Code?

MiniMax Code scores 67.5 (B) on agent readiness against Amp's 57.1 (C), and leads in 4 of 7 scored categories. Amp leads on transparency & trust.

Are Amp and MiniMax Code open source?

No open-source release is listed for Amp. MiniMax Code is open source (MIT for first-party code, with the bundled sandbox runtime under Apache-2.0. The desktop app's source isn't published).

Other comparisons with Amp or MiniMax Code

Machine-readable

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