{
  "data": {
    "a": {
      "slug": "deepgram-voice-agent",
      "name": "Deepgram Voice Agent API",
      "vendor": "Deepgram",
      "vendorUrl": "https://deepgram.com",
      "kind": "http-api",
      "category": "voice-agents",
      "summary": "One WebSocket that runs Deepgram STT (Flux or Nova-3), a managed or bring-your-own LLM and Deepgram or third-party TTS, with turn-taking, barge-in and function calling.",
      "url": "https://www.anchorterminal.com/tools/deepgram-voice-agent",
      "markdownUrl": "https://www.anchorterminal.com/tools/deepgram-voice-agent.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/deepgram-voice-agent.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/deepgram-voice-agent.json",
      "repo": "https://github.com/deepgram/deepgram-python-sdk",
      "license": "MIT (SDKs)",
      "transports": [
        "http",
        "streamable-http",
        "stdio",
        "sse"
      ],
      "remoteUrl": "https://agent.deepgram.com/v1/agent",
      "packages": [
        {
          "registry": "npm",
          "name": "@deepgram/sdk"
        },
        {
          "registry": "pypi",
          "name": "deepgram-sdk"
        },
        {
          "registry": "pypi",
          "name": "deepctl"
        }
      ],
      "auth": "api-key",
      "authNotes": "`Authorization: Token \u003ckey\u003e` header on REST and WebSocket calls. Short-lived JWTs (30-second TTL) from the token endpoint for browsers. The `dg` CLI MCP server uses `dg login` credentials or `DEEPGRAM_API_KEY`. The docs MCP needs no key. BYO LLM and TTS providers take their own keys in the `endpoint.headers` of the Settings message.",
      "pricing": "usage",
      "pricingNotes": "Billed per minute of WebSocket connection time. Standard $0.075 a minute pay as you go ($0.068 Growth), Standard with your own TTS $0.065, your own LLM and TTS $0.050 ($0.041 Growth). Advanced tier (larger LLMs such as GPT-5 or Claude Sonnet) $0.163, or $0.122 with your own TTS. $200 free credit with no card. Carrier costs are extra (https://deepgram.com/pricing).",
      "priceSummary": "Pay per use",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 or machine payment in the docs or pricing. Card or prepaid credits only (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 468,
        "npmWeekly": 1123798,
        "pypiWeekly": 805026,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://developers.deepgram.com/docs/voice-agent",
      "llmsTxt": "https://developers.deepgram.com/llms.txt",
      "capabilities": [
        "voice.agent",
        "voice.pipeline",
        "voice.tools"
      ],
      "tags": [
        "hosted",
        "no-card",
        "closed-source",
        "python",
        "typescript",
        "llms-txt",
        "mcp",
        "streaming",
        "pipeline",
        "enterprise",
        "self-hosted"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.4,
        "grade": "B",
        "agentReady": false,
        "rank": 126,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 40,
          "reliability": 55,
          "schema": 90,
          "security": 71,
          "transparency": 80
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "$0.075 a minute all in on Standard, $0.050 with your own LLM and TTS, $200 of credit with no card. No phone numbers or SIP, so you bridge Twilio or another carrier yourself.",
        "strengths": [
          "$0.075 a minute all in on Standard, $0.050 with your own LLM and TTS, $200 of credit with no card",
          "AsyncAPI description of the agent socket plus a public OpenAPI file",
          "Role-based API keys with expiry and 30-second browser tokens",
          "SDKs in Python, JavaScript, Java, Go, C# and React, updated in September 2026",
          "Function-call hold that waits for a confirmed user turn before irreversible tools run"
        ],
        "weaknesses": [
          "No phone numbers or SIP, so you bridge Twilio or another carrier yourself",
          "Fifteen status incidents since July, four of them an hour or longer on parts the agent uses",
          "Call audio is kept for model improvement unless `mip_opt_out` is set",
          "No SLA terms on self-serve plans",
          "Sessions end at 2 hours"
        ],
        "agentNotes": [
          "Set `mip_opt_out` in the Settings message to keep call audio out of training",
          "Use the function-call hold for anything irreversible, since replies can start before the user's turn is confirmed",
          "Back off exponentially on 429, a pay-as-you-go project gets 45 concurrent sockets",
          "Pin the LLM version, an unpinned Gemini route failed for 1.5 hours on 21 July 2026",
          "Mint browser tokens with `ttl_seconds`, not `ttl`, or they expire after 30 seconds"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
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            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68.4
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        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 40,
          "reliability": 55,
          "schema": 90,
          "security": 71,
          "transparency": 70
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl https://agent.deepgram.com/v1/agent/settings/think/models \\\n  -H \"Authorization: Token $DEEPGRAM_API_KEY\"",
        "claudeCode": "claude mcp add deepgram-docs --transport http https://api.dx.deepgram.com/kapa/mcp",
        "config": {
          "mcpServers": {
            "deepgram": {
              "args": [
                "mcp"
              ],
              "command": "dg",
              "env": {
                "DEEPGRAM_API_KEY": "${DEEPGRAM_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/voice.agent",
        "tool": "https://letme.dev/deepgram-voice-agent"
      },
      "sameCompany": [
        "deepgram-stt",
        "deepgram-tts"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Standard",
          "unit": "call-minute",
          "usd": 0.075,
          "note": "pay as you go, Deepgram STT, managed LLM and TTS included, carrier extra"
        },
        {
          "item": "Standard with own TTS",
          "unit": "call-minute",
          "usd": 0.065
        },
        {
          "item": "Own LLM and TTS",
          "unit": "call-minute",
          "usd": 0.05,
          "note": "STT and orchestration only"
        },
        {
          "item": "Advanced",
          "unit": "call-minute",
          "usd": 0.163,
          "note": "larger LLMs, all-in except carrier"
        },
        {
          "item": "Advanced with own TTS",
          "unit": "call-minute",
          "usd": 0.122
        }
      ],
      "provenance": {
        "legalEntity": "Deepgram, Inc.",
        "domain": "deepgram.com",
        "domainRegistered": "2016-01-28",
        "endpointOnVendorDomain": true,
        "terms": "https://deepgram.com/terms",
        "privacy": "https://deepgram.com/privacy",
        "statusPage": "https://status.deepgram.com",
        "changelog": "https://developers.deepgram.com/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/deepgram-voice-agent.json",
      "live": {
        "slug": "deepgram-voice-agent",
        "probe": {
          "target": "https://agent.deepgram.com/v1/agent",
          "method": "get",
          "lastAt": "2026-10-04T23:06:09.864810682Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 576,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
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          "p95ms24h": 1585,
          "samples24h": 272,
          "samples30d": 1092,
          "days": [
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              "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": 262,
              "ok": 262
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.deepgram.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T22:56:40.847580516Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "deepgram/deepgram-python-sdk",
            "version": "v7.12.0",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:25:23.342334431Z"
          },
          {
            "registry": "npm",
            "name": "@deepgram/sdk",
            "version": "5.14.0",
            "seenAt": "2026-10-04T16:25:21.087399088Z"
          },
          {
            "registry": "pypi",
            "name": "deepctl",
            "version": "0.3.1",
            "released": "2026-09-29",
            "seenAt": "2026-10-04T16:25:21.448203268Z"
          },
          {
            "registry": "pypi",
            "name": "deepgram-sdk",
            "version": "7.12.0",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:25:21.33581967Z"
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        ],
        "githubStars": 468,
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        "pypiWeekly": 806541,
        "securityTxt": {
          "url": "https://deepgram.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:00.338324598Z"
        },
        "llmsTxt": {
          "url": "https://developers.deepgram.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:33.829894005Z"
        },
        "domain": {
          "domain": "deepgram.com",
          "registered": "2016-01-28",
          "source": "https://rdap.verisign.com/com/v1/domain/deepgram.com",
          "checkedAt": "2026-10-04T13:03:28.939824686Z"
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        "updatedAt": "2026-10-04T23:06:09.864810682Z"
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      "slug": "retell-ai",
      "name": "Retell AI API + MCP",
      "vendor": "Retell AI",
      "vendorUrl": "https://www.retellai.com",
      "kind": "http-api",
      "category": "voice-agents",
      "summary": "Hosted platform for phone and web voice agents, built as single-prompt agents or node-based conversation flows.",
      "url": "https://www.anchorterminal.com/tools/retell-ai",
      "markdownUrl": "https://www.anchorterminal.com/tools/retell-ai.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/retell-ai.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/retell-ai.json",
      "repo": "https://github.com/RetellAI/retell-typescript-sdk",
      "license": "Apache-2.0 (SDKs)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.retellai.com",
      "packages": [
        {
          "registry": "npm",
          "name": "retell-sdk"
        },
        {
          "registry": "npm",
          "name": "retell-client-js-sdk"
        },
        {
          "registry": "pypi",
          "name": "retell-sdk"
        }
      ],
      "auth": "api-key",
      "authNotes": "Bearer API key for the REST API and the hosted MCP server at `https://mcp.retellai.com`. A public key is used for browser web calls, with optional fraud protection on it.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go with $10 of free credits, priced per component. Voice infrastructure $0.055 a minute, Retell and most third-party voices $0.015 (ElevenLabs $0.04), telephony $0.015 on Retell numbers, and the LLM from $0.0016 to $0.32 a minute depending on model. The vendor puts the total at $0.07 to $0.31 a minute. Speech-to-speech models run $0.07 (GPT Realtime mini) to $0.38 a minute. Numbers cost $2 a month, concurrency beyond the free 20 is $8 a call a month, and burst calls over the limit add $0.10 a minute. Enterprise pricing is custom (https://www.retellai.com/pricing).",
      "priceSummary": "$2 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 62,
        "npmWeekly": 242906,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
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      "docsUrl": "https://docs.retellai.com",
      "llmsTxt": "https://docs.retellai.com/llms.txt",
      "openapi": "https://docs.retellai.com/openapi-final.yaml",
      "capabilities": [
        "voice.agent",
        "voice.pipeline",
        "voice.speech-to-speech",
        "voice.tools",
        "voice.telephony"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "streaming",
        "pipeline",
        "speech-to-speech",
        "enterprise"
      ],
      "lastRelease": "2026-09-14",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 69.4,
        "grade": "B",
        "agentReady": false,
        "rank": 114,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 60,
          "maintenance": 85,
          "payments": 40,
          "reliability": 60,
          "schema": 92,
          "security": 76,
          "transparency": 79
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        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
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        "negative": 0,
        "verdict": "Published per-minute price for every component, from $0.07 a minute all in. Call data kept indefinitely unless retention is set per agent.",
        "strengths": [
          "Published per-minute price for every component, from $0.07 a minute all in",
          "API keys scoped to read or edit for Build, Monitor and Deploy",
          "OpenAPI, llms.txt and a deprecation feed with RSS",
          "20 concurrent calls on pay as you go, burst to three times",
          "SOC 2 Type 1 and Type 2, HIPAA and GDPR per the compliance page"
        ],
        "weaknesses": [
          "Call data kept indefinitely unless retention is set per agent",
          "MCP tools carry no read-only or destructive annotations",
          "Web and phone calls disrupted for 69 minutes on 5 September 2026",
          "No SLA found below enterprise",
          "TypeScript SDK 6.0.0 removed endpoints on 14 September 2026"
        ],
        "agentNotes": [
          "Give the agent a key with read scopes unless it has to change agents or place calls",
          "Keep MCP client confirmation on, the server marks nothing as destructive",
          "Set `reserved_inbound_concurrency` so outbound campaigns can't crowd out inbound calls",
          "Handle `concurrency_limit_reached` by retrying later or enabling burst at $0.10 a minute extra",
          "Set a data retention period on each agent that handles personal data"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
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        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
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            "confidence": "medium",
            "grade": "B",
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            "pending": [
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            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
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        "editorialScores": {
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          "reliability": 60,
          "schema": 92,
          "security": 76,
          "transparency": 75
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        "provenanceScore": 82
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      "connect": {
        "http": "curl -X POST https://api.retellai.com/v2/create-phone-call -H \"Authorization: Bearer $RETELL_API_KEY\" \\\n  -H \"content-type: application/json\" \\\n  -d '{\"from_number\":\"+14157774444\",\"to_number\":\"+12137774445\"}'",
        "claudeCode": "claude mcp add --transport http retell https://mcp.retellai.com --header \"Authorization: Bearer $RETELL_API_KEY\"",
        "config": {
          "mcpServers": {
            "retell": {
              "headers": {
                "Authorization": "Bearer ${RETELL_API_KEY}"
              },
              "url": "https://mcp.retellai.com"
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        "capability": "https://letme.dev/voice.agent",
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      "unitPrices": [
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          "item": "Retell voice infrastructure",
          "unit": "call-minute",
          "usd": 0.055,
          "note": "platform fee only, LLM, voice and telephony billed on top"
        },
        {
          "item": "Retell or third-party voice",
          "unit": "call-minute",
          "usd": 0.015,
          "note": "ElevenLabs voices $0.04"
        },
        {
          "item": "Retell telephony",
          "unit": "call-minute",
          "usd": 0.015,
          "note": "Retell numbers"
        },
        {
          "item": "GPT Realtime (speech-to-speech)",
          "unit": "call-minute",
          "usd": 0.345
        },
        {
          "item": "GPT Realtime mini (speech-to-speech)",
          "unit": "call-minute",
          "usd": 0.07
        },
        {
          "item": "Phone number",
          "unit": "month",
          "usd": 2
        },
        {
          "item": "Extra concurrent call",
          "unit": "month",
          "usd": 8,
          "note": "first 20 free"
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        "legalEntity": "Retell AI Inc.",
        "domain": "retellai.com",
        "domainRegistered": "2023-06-17",
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        "terms": "https://www.retellai.com/legal/terms-of-service",
        "privacy": "https://www.retellai.com/legal/privacy-policy",
        "statusPage": "https://status.retellai.com",
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  "markdown": "Retell AI API + MCP has a score of 69.4 (B) against Deepgram Voice Agent API's 68.4 (B). Both do voice agent. The largest gap is agent ergonomics, 7 points.\n\n- Deepgram Voice Agent API: grade B, 68.4/100, rank #126 of 452. Markdown https://www.anchorterminal.com/tools/deepgram-voice-agent.md · JSON https://www.anchorterminal.com/api/v1/tools/deepgram-voice-agent.json\n- Retell AI API + MCP: grade B, 69.4/100, rank #114 of 452. Markdown https://www.anchorterminal.com/tools/retell-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/retell-ai.json\n\n## Which one, for what\n\nPick Deepgram Voice Agent API for agent ergonomics (+7).\n\nPick Retell AI API + MCP for reliability (+5), security \u0026 auth (+5).\n\n## Score by category\n\n| Category | Weight | Deepgram Voice Agent API | Retell AI API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 60 | Retell AI API + MCP +5 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 90 | 92 | Retell AI API + MCP +2 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 60 | Deepgram Voice Agent API +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 71 | 76 | Retell AI API + MCP +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 85 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 79 | Deepgram Voice Agent API +1 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **68.4 · B** | **69.4 · B** | |\n\n## Facts side by side\n\n| Fact | Deepgram Voice Agent API | Retell AI API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Deepgram | Retell AI |\n| Hosted endpoint | `https://agent.deepgram.com/v1/agent` | `https://api.retellai.com` |\n| Transports | HTTP, Streamable HTTP, stdio, SSE (legacy) | HTTP, Streamable HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Apache-2.0 (SDKs) |\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 | 2026-09-30 | 2026-09-14 |\n| Popularity | 468 stars, 1.1M npm/wk, 805k PyPI/wk | 62 stars, 243k npm/wk |\n| Agent reviews | 3/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**Deepgram Voice Agent API.** $0.075 a minute all in on Standard, $0.050 with your own LLM and TTS, $200 of credit with no card. No phone numbers or SIP, so you bridge Twilio or another carrier yourself.\n\n**Retell AI API + MCP.** Published per-minute price for every component, from $0.07 a minute all in. Call data kept indefinitely unless retention is set per agent.\n\n## Before you call either\n\n### Deepgram Voice Agent API\n\n1. Set `mip_opt_out` in the Settings message to keep call audio out of training\n2. Use the function-call hold for anything irreversible, since replies can start before the user's turn is confirmed\n3. Back off exponentially on 429, a pay-as-you-go project gets 45 concurrent sockets\n4. Pin the LLM version, an unpinned Gemini route failed for 1.5 hours on 21 July 2026\n5. Mint browser tokens with `ttl_seconds`, not `ttl`, or they expire after 30 seconds\n\n### Retell AI API + MCP\n\n1. Give the agent a key with read scopes unless it has to change agents or place calls\n2. Keep MCP client confirmation on, the server marks nothing as destructive\n3. Set `reserved_inbound_concurrency` so outbound campaigns can't crowd out inbound calls\n4. Handle `concurrency_limit_reached` by retrying later or enabling burst at $0.10 a minute extra\n5. Set a data retention period on each agent that handles personal data\n\n## Other comparisons with Deepgram Voice Agent API or Retell AI API + MCP\n\n- [Bland AI API + MCP vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/bland-ai-vs-deepgram-voice-agent.md)\n- [Bland AI API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-retell-ai.md)\n- [Bolna API + MCP vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/bolna-vs-deepgram-voice-agent.md)\n- [Bolna API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bolna-vs-retell-ai.md)\n- [Deepgram Voice Agent API vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-elevenlabs-agents.md)\n- [Deepgram Voice Agent API vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-hume-evi.md)\n- [Deepgram Voice Agent API vs Synthflow API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-synthflow.md)\n- [Deepgram Voice Agent API vs Ultravox Realtime API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-ultravox.md)\n- [Deepgram Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi.md)\n- [Deepgram Voice Agent API vs Vogent API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vogent.md)\n- [ElevenLabs Agents API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.md)\n- [Hume EVI (Empathic Voice Interface) vs Retell AI API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-retell-ai.md)\n- [Retell AI API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-synthflow.md)\n- [Retell AI API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/retell-ai-vs-ultravox.md)\n- [Retell AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-vapi.md)\n- [Retell AI API + MCP vs Vogent API](https://www.anchorterminal.com/compare/retell-ai-vs-vogent.md)\n",
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    "description": "Retell AI API + MCP has a score of 69.4 (B) against Deepgram Voice Agent API's 68.4 (B). Both do voice agent. The largest gap is agent ergonomics, 7 points. Category scores, facts, verdicts and agent notes side by side.",
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