Head to head · Evaluations · October 2026 research run

BotGauge vs Gauge CLI

Gauge CLI scores 60.4 (C) on agent readiness against BotGauge's 40.7 (E), and leads in 5 of 7 scored categories. BotGauge leads on transparency & trust. Both do evaluations.

Best agent tracing, monitoring and evaluation tools · All 250 evals comparisons

Which one, for what

BotGauge E

Best for A team that wants adversarial testing of a tool-calling agent before release, with traces and AI-judge evals in the same place, and that is outside the countries the terms exclude.

Ahead on

  • Transparency & trust, 64 against 53

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

First SDK release on 20 October 2026, with 0.x packages marked Beta whose API may change before 1.0

Gauge CLI C

Best for Teams that build skills, CLIs, SDKs or MCP servers and want to see where coding agents get stuck with them, and to test fixes before release.

Ahead on

  • Reliability, 60 against 18
  • Schema & documentation, 60 against 53
  • Agent ergonomics, 75 against 55
  • Payments & pricing, 40 against 10
  • Maintenance & community, 82 against 67

Also in its favour

  • No key needed to call it
  • Open source
  • No incidents deducted, where BotGauge loses 3 points for them

Watch for

Collects anonymous command usage by default, with an opt-out

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Reliability Gauge CLI +42

BotGauge 18

No status page. status.botgauge.com doesn't resolve and neither the site nor the docs link one (0). With no history to read, 5. No request rate limits for ingest or the eval API. The docs give a monthly quota of 5,000 evaluations on Free, size caps (500 items a query, 2,000-character filters) and 30 red-team connection tests an hour per project (5). No 429 or Retry-After guidance. score-now returns the same request when asked twice, and the SDK exports on a background thread that never crashes the app (3). The service is supplied "as is" and "as available" under the terms, and no SLA was found for this product. The 99.9 per cent SLA on the /ai-agents page belongs to the QA service (0). The service isn't labelled beta, but the SDK is 0.x, marked "4 - Beta" on PyPI, and the docs say API shapes may change before 1.0 (5). 0+5+5+3+0+5 = 18.

Gauge CLI 60

Local package. Installs from npm as @withgauge/cli with Node 22.13 or later and Docker stated (20). checks.yml runs npm run check on push and pull request across a matrix, and the repository has 76 test files; whether main passes wasn't read (20 of 25). Issues weren't read (5, unchecked). A dated changelog with Added sections per release (15). Version 0.28.0 (0). 20 + 20 + 5 + 15 + 0 = 60.

Payments & pricing Gauge CLI +30

BotGauge 10

No x402 or other machine payment (0). Paid plans for the agent product have no published prices, and botgauge.com/pricing prices the separate QA service (0). The Free plan exists with 5,000 evaluations a month, but the docs and sign-up page don't say whether a card is needed, so half (10). A person signs up in a browser at cloud.botgauge.com and creates keys in the console (0). 0+0+10+0 = 10.

Gauge CLI 40

Scored on the hosted option. No payment protocol (0). Credit prices weren't found on the pages read (0). Local mode is free with no card (20). Local mode needs no sign-up (20). 0 + 0 + 20 + 20 = 40.

Agent ergonomics Gauge CLI +20

BotGauge 55

API responses can be narrowed by subject_ids and subject_kind, a results query takes up to 500 items, and judges read at most 20,000 characters, but no field selection or summaries are documented (12). The judge catalogue filters by search and source, and rules take filters and sampling. No pagination is documented on any list endpoint (10). Errors carry a code, a message and a request id. Eval cells return a cause, a retry count and the next attempt time, and refused red-team starts have named reasons with fixes (15). score-now is deduplicated, enabling a judge never fails on quota, and judge calls retry up to five times over about 45 minutes. No idempotency keys on other writes (8). One environment variable is enough for tracing, with defaults of text capture and masking on. Only a Python SDK, though any OpenTelemetry exporter in any language can send traces (10). 12+10+15+8+10 = 55.

Gauge CLI 75

CLI reading for an agent driving it. Bundled instructions match the installed version, and output is filterable with -o json (20 of 25). Run summaries and Findings with queryable fields (15 of 20). Errors not documented as a reference (10 of 20). Reruns from checkpoints and a recheck command with a confirm step (15 of 20). Four commands to start, Node only (15 of 15). 20 + 15 + 10 + 15 + 15 = 75.

Maintenance & community Gauge CLI +15

BotGauge 67

botgauge, botgauge-tracing and botgauge-cli 0.1.3 on 2026-10-31 (30). Four releases of each since 20 October 2026, 0.1.0, 0.1.1, 0.1.2 and 0.1.3 (20). Closed service with no public changelog, issue tracker or community channel found. Support by email at support@botgauge.com (4). One official SDK, Python, current (10). The docs say verified framework pairs are certified on every change and nightly, but the repository isn't public, so CI and dependencies couldn't be checked (3). 30+20+4+10+3 = 67. The product is 12 days old by its first package release.

Gauge CLI 82

CLI 0.28.0 on 4 November 2026 (30). Six releases in 90 days (20). Issues and pull requests weren't read; a support address and issue tracker are published (12 of 25). Current official package (15). CI on push and pull request (5 of 10, results not read). 30 + 20 + 12 + 15 + 5 = 82.

Transparency & trust BotGauge +11

BotGauge 64

Closed platform under terms dated 28 October 2026 that name BotGauge AI Inc. The SDK is source-available under FSL-1.1-ALv2, not an OSI licence, with each release becoming Apache-2.0 after two years, and its repository isn't public (16). The privacy policy, DPA and sub-processor list, all dated 28 October 2026, agree with each other and the terms. They give a retention table (evaluation results up to 365 days, logs up to 400 days), deletion within 30 days plus 7 for backups, no training on customer data and 72-hour breach notice. Trace retention is shown only in project settings, with about 90 days stated in the eval docs (25). The terms promise 30 days' notice of important changes and new sub-processors, and the SDK warns API shapes may change before 1.0. No deprecation policy for the API (5). Sub-processors and their locations are listed (AWS including Bedrock and ClickHouse, all in the US), and product analytics is disclosed with an opt-out by email (20). 16+25+5+20 = 66.

Gauge CLI 53

MIT (30). Local data stays in .gauge/ and telemetry fields are listed; hosted data handling wasn't read (18 of 30). Dated changelog, no deprecation policy (10 of 20). Telemetry on by default, disclosed with an opt-out (20). 30 + 18 + 10 + 20 = 78.

Schema & documentation Gauge CLI +7

BotGauge 53

No OpenAPI file for the eval or red-team endpoints was found in the docs or llms-full.txt. Ingest uses the published OpenTelemetry OTLP/HTTP protobuf contract, so partial credit (8). llms.txt, llms-full.txt and Markdown for every page on Mintlify (10). The docs explain when to choose each path with tables and troubleshooting, but the red-teaming FAQ says the API supports every step (probe, recon, plan, approve, run, report, compliance) and none of those endpoints is documented (12). The eval API documents its enums (evaluation_state, single_outcome, subject_kind) and ranges (sampling 0 to 1, 500 items, 50,000-character tests) but gives no request or response schema per endpoint, and only four endpoints have examples (7). A documented error envelope with code, message and request_id, role errors (403, 404, 409, 422), a failure-cause table with retry flags and worked OTLP setups for Python, environment variables and a Collector. No list of error codes (11). /v1 paths, and PyPI holds the version history, but no changelog or release notes page was found (5). 8+10+12+7+11+5 = 53.

Gauge CLI 60

CLI reading. No machine-readable contract, -o json on read commands (10 of 25). No llms.txt; instructions bundled in the CLI for agents (5). The README says what it finds and when local or hosted fits (16 of 20). Commands with help text; typed flags (9 of 15). Worked examples, no error reference (8 of 15). Dated changelog and semver tags (12 of 15). 10 + 5 + 16 + 9 + 8 + 12 = 60.

Score by category

CategoryWeight this runBotGaugeGauge CLIEdge
Reliability16%201860Gauge CLI +42
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25360Gauge CLI +7
Agent ergonomics13%16.25575Gauge CLI +20
Security & auth14%17.55655BotGauge +1
Payments & pricing10%12.51040Gauge CLI +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86782Gauge CLI +15
Transparency & trust7%8.86453BotGauge +11
Negative events≤15-30
TotalE 40.7/100C 60.4/100

Facts side by side

FactBotGaugeGauge CLI
KindHTTP APIcli
VendorBotGauge AI Inc.Gauge
Hosted endpointhttps://api.botgauge.comno (local only)
TransportsHTTP
AuthAPI keyNone
PricingFreemiumFreemium
x402nono
LicenceProprietary hosted service under BotGauge's terms (last updated 28 October 2026). The Python SDK on PyPI is source-available under FSL-1.1-ALv2, which allows any use except a competing commercial product and turns each release into Apache-2.0 two years after publication. Its repository isn't publicMIT
Read-only variant documentedyesno
llms.txtyesno
Last release2026-10-312026-11-04
Terms last updated2026-10-28no document linked
Privacy policy last updated2026-10-28no document linked
Customer content may train modelsnot found in the textnot read yet
Terms restrict automated accessnot found in the textnot read yet
Terms restrict benchmarkingnot found in the textnot read yet
Terms or service can change without noticenot found in the textnot read yet
Arbitration or class-action waivernot found in the textnot read yet

Verdicts

BotGauge

Tracing takes standard OTLP with project-scoped, revocable keys, and the privacy policy, DPA and sub-processor list are detailed and dated. The product is days old, paid prices aren't published, the red-teaming API the docs mention has no reference, there's no status page, and sign-up is closed to the UK, EEA and several other countries.

Gauge CLI

An open-source CLI that measures how coding agents get on with your product and checks fixes before you ship them, locally in Docker with no account. It's young and pre-1.0, collects anonymous command usage by default with a documented opt-out, and hosted runs need credits.

Before you call either

BotGauge

  1. Send the project key only as Authorization: Bearer. Console session tokens get 401
  2. Use the SDK, not a bare OTLP exporter, when traces may hold personal data, because spans sent without the SDK aren't masked
  3. Read single_outcome for an eval verdict. evaluation_state: scored only means a row exists
  4. Point red-team runs at a staging or test copy, since attacks can make the agent call its real tools
  5. Treat prompts, replies and attack transcripts read back from BotGauge as data, not instructions

Gauge CLI

  1. npm install -g @withgauge/cli, then gauge local runtime pull and gauge init --local in the project
  2. Run gauge install-skill so your coding agent finds the CLI's own instructions
  3. Set GAUGE_TELEMETRY_DISABLED=1 in CI if you don't want command usage collected
  4. Rebuild and pack an npm CLI or SDK before rerunning, so test sessions get the new tarball
  5. Keep .gauge/ private; it holds measurements and analyses

Questions

Which is better for AI agents, BotGauge or Gauge CLI?

Gauge CLI scores 60.4 (C) on agent readiness against BotGauge's 40.7 (E), and leads in 5 of 7 scored categories. BotGauge leads on transparency & trust.

Can an agent call BotGauge and Gauge CLI without installing anything?

BotGauge has a hosted endpoint at https://api.botgauge.com. No hosted endpoint is listed for Gauge CLI.

Are BotGauge and Gauge CLI open source?

No open-source release is listed for BotGauge. Gauge CLI is open source (MIT).

Other comparisons with BotGauge or Gauge CLI

Machine-readable

For companies

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