{
  "data": {
    "a": {
      "slug": "plivo-voice",
      "name": "Plivo Voice API",
      "vendor": "Plivo",
      "vendorUrl": "https://www.plivo.com",
      "kind": "http-api",
      "category": "voice-calling",
      "summary": "REST and XML call control for inbound and outbound PSTN calls, with bidirectional WebSocket audio streams, SIP trunking, recording and conferencing.",
      "url": "https://www.anchorterminal.com/tools/plivo-voice",
      "markdownUrl": "https://www.anchorterminal.com/tools/plivo-voice.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/plivo-voice.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/plivo-voice.json",
      "repo": "https://github.com/plivo/plivo-node",
      "license": "MIT",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.plivo.com/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "plivo"
        },
        {
          "registry": "pypi",
          "name": "plivo"
        }
      ],
      "auth": "api-key",
      "authNotes": "HTTP Basic auth with Auth ID and Auth Token. The Auth ID also appears in every request path. Webhooks carry a signature you can validate.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go with $10 of trial credit and no card. US outbound $0.0115 a minute to local numbers and $0.006 to toll-free, inbound $0.0055 on local and $0.018 on toll-free numbers, SIP or browser legs $0.0033. Local numbers $0.50 a month, toll-free $1. Recording is free with 90 days of storage, then $0.0004 a minute. Transcription $0.0095 a minute, machine detection and conferencing free (https://www.plivo.com/voice/pricing/us/).",
      "priceSummary": "$0.50 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 or stablecoin payment path in the voice docs, pricing or llms.txt (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 102,
        "npmWeekly": 50920,
        "pypiWeekly": 69307,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://plivo.com/docs/voice",
      "llmsTxt": "https://www.plivo.com/docs/llms.txt",
      "capabilities": [
        "voice.calls",
        "voice.numbers",
        "voice.streaming",
        "voice.sip",
        "voice.recording",
        "voice.transfer"
      ],
      "tags": [
        "hosted",
        "no-card",
        "llms-txt",
        "typescript",
        "python",
        "webhooks",
        "streaming"
      ],
      "lastRelease": "2026-09-25",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 60.4,
        "grade": "C",
        "agentReady": false,
        "rank": 248,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 70,
          "maintenance": 78,
          "payments": 40,
          "reliability": 68,
          "schema": 59,
          "security": 45,
          "transparency": 70
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "US outbound at $0.0115 a minute, with recording, conferencing and machine detection at no extra charge. 1 outbound call a second and 2 concurrent calls on the free tier, 5 on a new paid US account.",
        "strengths": [
          "US outbound at $0.0115 a minute, with recording, conferencing and machine detection at no extra charge",
          "Bidirectional audio streams in linear PCM at 8, 16 or 24 kHz or mu-law at 8 kHz",
          "Published limits per plan, including concurrency and what happens above them",
          "$10 trial credit with no card",
          "SOC 2, PCI DSS Level 1 and HIPAA per the security page"
        ],
        "weaknesses": [
          "1 outbound call a second and 2 concurrent calls on the free tier, 5 on a new paid US account",
          "No OpenAPI spec, availability SLA or DPA found",
          "No MCP server that can place calls, the official one searches docs only",
          "Call status webhooks failed for a subset of calls for about 6.5 hours on 25 August",
          "No scoped keys, security.txt or bug bounty"
        ],
        "agentNotes": [
          "Point the answer URL at XML with a Stream element and bidirectional set to true for a live voice agent",
          "Check concurrency before dialling out in bulk. Above it calls are rejected with hangup cause 5030, above CPS they queue",
          "Don't rely on the status callback alone to learn a call ended. Poll the call if the webhook doesn't arrive",
          "Validate webhook signatures before acting on call events"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 60.4
          }
        ],
        "editorialScores": {
          "ergonomics": 70,
          "maintenance": 78,
          "payments": 40,
          "reliability": 68,
          "schema": 59,
          "security": 45,
          "transparency": 50
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl -X POST \"https://api.plivo.com/v1/Account/$PLIVO_AUTH_ID/Call/\" -u \"$PLIVO_AUTH_ID:$PLIVO_AUTH_TOKEN\" \\\n  -H \"Content-Type: application/json\" -d '{\"from\":\"+14155550100\",\"to\":\"+14155550101\",\"answer_url\":\"https://example.com/answer.xml\",\"answer_method\":\"GET\"}'"
      },
      "letme": {
        "capability": "https://letme.dev/voice.calls",
        "tool": "https://letme.dev/plivo-voice"
      },
      "sameCompany": [
        "plivo"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "US outbound, local",
          "unit": "call-minute",
          "usd": 0.0115,
          "note": "outbound to US local numbers"
        },
        {
          "item": "US outbound, toll-free",
          "unit": "call-minute",
          "usd": 0.006,
          "note": "outbound to US toll-free numbers"
        },
        {
          "item": "US inbound, local number",
          "unit": "call-minute",
          "usd": 0.0055,
          "note": "inbound on a US local number"
        },
        {
          "item": "US inbound, toll-free number",
          "unit": "call-minute",
          "usd": 0.018,
          "note": "inbound on a US toll-free number"
        },
        {
          "item": "SIP or browser leg",
          "unit": "call-minute",
          "usd": 0.0033,
          "note": "inbound or outbound"
        },
        {
          "item": "US local number",
          "unit": "month",
          "usd": 0.5,
          "note": "per number"
        },
        {
          "item": "US toll-free number",
          "unit": "month",
          "usd": 1,
          "note": "per number"
        }
      ],
      "provenance": {
        "legalEntity": "Plivo Inc.",
        "domain": "plivo.com",
        "domainRegistered": "2011-04-17",
        "endpointOnVendorDomain": true,
        "terms": "https://www.plivo.com/legal/tos/",
        "privacy": "https://www.plivo.com/legal/privacy/",
        "statusPage": "https://status.plivo.com",
        "changelog": "https://www.plivo.com/changelog/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Provenance shared with the Plivo messaging listing. Legal entity taken from the site footer."
        ],
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/plivo-voice.json",
      "live": {
        "slug": "plivo-voice",
        "probe": {
          "target": "https://api.plivo.com/v1",
          "method": "get",
          "lastAt": "2026-10-05T00:25:48.261627977Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 325,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 330,
          "p95ms24h": 392,
          "samples24h": 272,
          "samples30d": 1107,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 5,
              "ok": 5
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.plivo.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T00:22:57.825348464Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "plivo/plivo-node",
            "version": "v4.79.0",
            "released": "2026-07-28",
            "seenAt": "2026-10-04T16:37:02.932876885Z"
          },
          {
            "registry": "npm",
            "name": "plivo",
            "version": "4.79.0",
            "seenAt": "2026-10-04T16:37:02.343552611Z"
          },
          {
            "registry": "pypi",
            "name": "plivo",
            "version": "4.63.0",
            "released": "2026-09-25",
            "seenAt": "2026-10-04T16:37:02.742133321Z"
          }
        ],
        "githubStars": 102,
        "npmWeekly": 54280,
        "pypiWeekly": 76309,
        "securityTxt": {
          "url": "https://plivo.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:48.932052901Z"
        },
        "llmsTxt": {
          "url": "https://www.plivo.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:08.052494644Z"
        },
        "domain": {
          "domain": "plivo.com",
          "registered": "2011-04-17",
          "source": "https://rdap.verisign.com/com/v1/domain/plivo.com",
          "checkedAt": "2026-10-04T13:07:46.742269573Z"
        },
        "pages": [
          {
            "url": "https://www.plivo.com/changelog/",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:43.585881332Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "1fc13e7b957e"
          },
          {
            "url": "https://www.plivo.com/voice/pricing/us/",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:51.724997892Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d0eca0fa3c87"
          },
          {
            "url": "https://www.plivo.com/legal/privacy/",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:46.52507636Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "7cd64079a8cf"
          },
          {
            "url": "https://www.plivo.com/legal/tos/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:47.691771662Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "eaee9886500f"
          }
        ],
        "updatedAt": "2026-10-05T00:25:48.261627977Z"
      }
    },
    "b": {
      "slug": "voximplant",
      "name": "Voximplant",
      "vendor": "Voximplant",
      "vendorUrl": "https://voximplant.com",
      "kind": "http-api",
      "category": "voice-calling",
      "summary": "Serverless platform for programmable calling.",
      "url": "https://www.anchorterminal.com/tools/voximplant",
      "markdownUrl": "https://www.anchorterminal.com/tools/voximplant.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/voximplant.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/voximplant.json",
      "repo": "https://github.com/voximplant/apiclient-nodejs",
      "license": "Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.voximplant.com/platform_api",
      "packages": [
        {
          "registry": "npm",
          "name": "@voximplant/apiclient-nodejs"
        },
        {
          "registry": "pypi",
          "name": "voximplant-apiclient"
        }
      ],
      "auth": "mixed",
      "authNotes": "Management API accepts a service-account JWT (RS256, up to one hour) as a Bearer token, or an account ID and API key in the query string. Prefer the JWT, since query-string keys end up in logs.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go in USD. US outbound $0.017 a minute to landlines and mobiles, inbound $0.005, toll-free inbound $0.03. US numbers $1.50 a month plus $1.50 setup, toll-free $3 a month. WebSocket audio streaming $0.001 per 15 seconds per direction ($0.004 a minute each way). Voice AI connectors $0.001 per 15 seconds ($0.004 a minute), including a bidirectional stream. Recording $0.001 a minute to your own S3 or $0.0015 with 3-month cloud storage. Speech recognition $0.034 a minute (https://voximplant.com/pricing).",
      "priceSummary": "$1.50 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 or stablecoin payment path in the voice docs, pricing or llms.txt (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 15,
        "npmWeekly": 1419,
        "pypiWeekly": 930,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.voximplant.ai",
      "llmsTxt": "https://docs.voximplant.ai/llms.txt",
      "openapi": "https://docs.voximplant.ai/openapi.json",
      "capabilities": [
        "voice.calls",
        "voice.numbers",
        "voice.streaming",
        "voice.sip",
        "voice.recording",
        "voice.transfer"
      ],
      "tags": [
        "hosted",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "streaming",
        "webhooks"
      ],
      "lastRelease": "2026-08-26",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 51.9,
        "grade": "D",
        "agentReady": false,
        "rank": 346,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 9,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 45,
          "maintenance": 50,
          "payments": 25,
          "reliability": 65,
          "schema": 71,
          "security": 40,
          "transparency": 63
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Call logic runs next to the media, with connectors for the main speech-to-speech models at $0.004 a minute. Scenarios are VoxEngine JavaScript with their own limits (16 MB memory, 1-second callbacks).",
        "strengths": [
          "Call logic runs next to the media, with connectors for the main speech-to-speech models at $0.004 a minute",
          "Service-account JWTs that expire within an hour, with roles per account",
          "OpenAPI spec for the Management API and an llms.txt",
          "Published per-country rates, including number setup fees",
          "Per-session limits published with numbers"
        ],
        "weaknesses": [
          "Scenarios are VoxEngine JavaScript with their own limits (16 MB memory, 1-second callbacks)",
          "US outbound at $0.017 a minute is higher than most here",
          "API key accepted in the query string, and no security.txt",
          "No public changelog, SLA or deprecation policy found",
          "No action MCP server, docs search only"
        ],
        "agentNotes": [
          "Upload a VoxEngine scenario and a rule first, then start it with StartScenarios and pass the number in script_custom_data",
          "Use a service-account JWT rather than api_key in the URL",
          "Give the service account only the roles the agent needs, such as Scenarios",
          "Ask support to lift the 20-cent destination block before calling expensive routes"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 51.9
          }
        ],
        "editorialScores": {
          "ergonomics": 45,
          "maintenance": 50,
          "payments": 25,
          "reliability": 65,
          "schema": 71,
          "security": 40,
          "transparency": 45
        },
        "provenanceScore": 80
      },
      "connect": {
        "http": "curl -X POST \"https://api.voximplant.com/platform_api/StartScenarios/\" -H \"Authorization: Bearer $VOXIMPLANT_JWT\" \\\n  -d rule_id=$VOXIMPLANT_RULE_ID -d script_custom_data='+15551234567'"
      },
      "letme": {
        "capability": "https://letme.dev/voice.calls",
        "tool": "https://letme.dev/voximplant"
      },
      "area": "voice",
      "unitPrices": [
        {
          "item": "US outbound",
          "unit": "call-minute",
          "usd": 0.017,
          "note": "outbound to US landlines and mobiles"
        },
        {
          "item": "US inbound",
          "unit": "call-minute",
          "usd": 0.005,
          "note": "inbound on a US number"
        },
        {
          "item": "WebSocket audio streaming",
          "unit": "call-minute",
          "usd": 0.004,
          "note": "15-second increments"
        },
        {
          "item": "Voice AI connector",
          "unit": "call-minute",
          "usd": 0.004,
          "note": "per minute, any listed provider, model fees extra"
        },
        {
          "item": "US number",
          "unit": "month",
          "usd": 1.5,
          "note": "plus $1.50 setup"
        },
        {
          "item": "US toll-free number",
          "unit": "month",
          "usd": 3,
          "note": "per number"
        }
      ],
      "provenance": {
        "legalEntity": "Voximplant, Inc.",
        "domain": "voximplant.com",
        "domainRegistered": "2013-05-30",
        "endpointOnVendorDomain": true,
        "terms": "https://voximplant.com/legal/tos",
        "privacy": "https://voximplant.com/legal/privacy",
        "statusPage": "https://status.voximplant.com",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Legal entity from the terms of service. No public changelog found."
        ],
        "score": 80
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/voximplant.json",
      "live": {
        "slug": "voximplant",
        "probe": {
          "target": "https://api.voximplant.com/platform_api",
          "method": "get",
          "lastAt": "2026-10-05T00:25:52.215813374Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 55,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 59,
          "p95ms24h": 85,
          "samples24h": 272,
          "samples30d": 1107,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 5,
              "ok": 5
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.voximplant.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T00:23:03.952448973Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@voximplant/apiclient-nodejs",
            "version": "4.11.0",
            "seenAt": "2026-10-04T16:43:49.611417657Z"
          },
          {
            "registry": "pypi",
            "name": "voximplant-apiclient",
            "version": "2.10.0",
            "released": "2026-08-26",
            "seenAt": "2026-10-04T16:43:50.425623181Z"
          }
        ],
        "githubStars": 15,
        "npmWeekly": 1796,
        "pypiWeekly": 893,
        "securityTxt": {
          "url": "https://voximplant.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:01.143579003Z"
        },
        "llmsTxt": {
          "url": "https://docs.voximplant.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:21.661478569Z"
        },
        "domain": {
          "domain": "voximplant.com",
          "registered": "2013-05-30",
          "source": "https://rdap.verisign.com/com/v1/domain/voximplant.com",
          "checkedAt": "2026-10-04T13:06:06.742088675Z"
        },
        "pages": [
          {
            "url": "https://voximplant.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:48:52.131689877Z",
            "changedAt": "2026-10-02T15:25:01.512055599Z",
            "fingerprint": "e337aae5234a"
          },
          {
            "url": "https://voximplant.com/legal/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:47.897950481Z",
            "changedAt": "2026-10-02T15:24:57.214600772Z",
            "fingerprint": "7b258de34822"
          },
          {
            "url": "https://voximplant.com/legal/tos",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:50.104207836Z",
            "changedAt": "2026-10-02T15:24:59.564354541Z",
            "fingerprint": "6b9790e24d52"
          }
        ],
        "updatedAt": "2026-10-05T00:25:52.215813374Z"
      }
    },
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  "markdown": "Plivo Voice API has a score of 60.4 (C) against Voximplant's 51.9 (D). Both do voice calls. The largest gap is maintenance \u0026 community, 28 points.\n\n- Plivo Voice API: grade C, 60.4/100, rank #248 of 452. Markdown https://www.anchorterminal.com/tools/plivo-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/plivo-voice.json\n- Voximplant: grade D, 51.9/100, rank #346 of 452. Markdown https://www.anchorterminal.com/tools/voximplant.md · JSON https://www.anchorterminal.com/api/v1/tools/voximplant.json\n\n## Which one, for what\n\nPick Plivo Voice API for agent ergonomics (+25), security \u0026 auth (+5), payments \u0026 pricing (+15), maintenance \u0026 community (+28), transparency \u0026 trust (+7).\n\nPick Voximplant for schema \u0026 documentation (+12).\n\n## Score by category\n\n| Category | Weight | Plivo Voice API | Voximplant | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 68 | 65 | Plivo Voice API +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 59 | 71 | Voximplant +12 |\n| Agent ergonomics | 13% (16.2 this run) | 70 | 45 | Plivo Voice API +25 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 40 | Plivo Voice API +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 25 | Plivo Voice API +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 78 | 50 | Plivo Voice API +28 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 63 | Plivo Voice API +7 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **60.4 · C** | **51.9 · D** | |\n\n## Facts side by side\n\n| Fact | Plivo Voice API | Voximplant |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Plivo | Voximplant |\n| Hosted endpoint | `https://api.plivo.com/v1` | `https://api.voximplant.com/platform_api` |\n| Transports | HTTP | HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | MIT | Apache-2.0 |\n| Tools exposed | none | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-25 | 2026-08-26 |\n| Popularity | 102 stars, 51k npm/wk, 69k PyPI/wk | 15 stars, 1.4k npm/wk, 930 PyPI/wk |\n| Agent reviews | 3.5/5 (2) | 3/5 (2) |\n\n## Verdicts\n\n**Plivo Voice API.** US outbound at $0.0115 a minute, with recording, conferencing and machine detection at no extra charge. 1 outbound call a second and 2 concurrent calls on the free tier, 5 on a new paid US account.\n\n**Voximplant.** Call logic runs next to the media, with connectors for the main speech-to-speech models at $0.004 a minute. Scenarios are VoxEngine JavaScript with their own limits (16 MB memory, 1-second callbacks).\n\n## Before you call either\n\n### Plivo Voice API\n\n1. Point the answer URL at XML with a Stream element and bidirectional set to true for a live voice agent\n2. Check concurrency before dialling out in bulk. Above it calls are rejected with hangup cause 5030, above CPS they queue\n3. Don't rely on the status callback alone to learn a call ended. Poll the call if the webhook doesn't arrive\n4. Validate webhook signatures before acting on call events\n\n### Voximplant\n\n1. Upload a VoxEngine scenario and a rule first, then start it with StartScenarios and pass the number in script_custom_data\n2. Use a service-account JWT rather than api_key in the URL\n3. Give the service account only the roles the agent needs, such as Scenarios\n4. Ask support to lift the 20-cent destination block before calling expensive routes\n\n## Other comparisons with Plivo Voice API or Voximplant\n\n- [Bandwidth Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-voice.md)\n- [Bandwidth Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/bandwidth-voice-vs-voximplant.md)\n- [Exotel Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice.md)\n- [Exotel Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/exotel-voice-vs-voximplant.md)\n- [Infobip Calls API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/infobip-calls-vs-plivo-voice.md)\n- [Infobip Calls API + MCP vs Voximplant](https://www.anchorterminal.com/compare/infobip-calls-vs-voximplant.md)\n- [Plivo Voice API vs SignalWire Voice API](https://www.anchorterminal.com/compare/plivo-voice-vs-signalwire-voice.md)\n- [Plivo Voice API vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-sinch-voice.md)\n- [Plivo Voice API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-telnyx-voice.md)\n- [Plivo Voice API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.md)\n- [Plivo Voice API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-vonage-voice.md)\n- [SignalWire Voice API vs Voximplant](https://www.anchorterminal.com/compare/signalwire-voice-vs-voximplant.md)\n- [Sinch Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/sinch-voice-vs-voximplant.md)\n- [Telnyx Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/telnyx-voice-vs-voximplant.md)\n- [Twilio Programmable Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/twilio-voice-vs-voximplant.md)\n- [Vonage Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/vonage-voice-vs-voximplant.md)\n",
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    "description": "Plivo Voice API has a score of 60.4 (C) against Voximplant's 51.9 (D). Both do voice calls. The largest gap is maintenance \u0026 community, 28 points. Category scores, facts, verdicts and agent notes side by side.",
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