{ "data": { "a": { "slug": "deepgram-tts", "name": "Deepgram Text-to-Speech (Aura-2, Flux TTS)", "vendor": "Deepgram", "vendorUrl": "https://deepgram.com", "kind": "model", "category": "text-to-speech", "summary": "Deepgram's text-to-speech API for generating spoken audio.", "url": "https://www.anchorterminal.com/tools/deepgram-tts", "markdownUrl": "https://www.anchorterminal.com/tools/deepgram-tts.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/deepgram-tts.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/deepgram-tts.json", "repo": "https://github.com/deepgram/deepgram-python-sdk", "license": "MIT (SDKs)", "transports": [ "http", "streamable-http", "stdio", "sse" ], "remoteUrl": "https://api.deepgram.com/v1", "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.", "pricing": "usage", "pricingNotes": "$200 free credit with no card, then pay as you go. Flux TTS $0.045 per 1,000 characters, Aura-2 $0.030, Aura-1 $0.015. Growth (from $4,000 a year prepaid) cuts these to $0.0405, $0.027 and $0.0135. A matching-credit offer on Flux TTS runs to 2026-12-31, capped at $500 (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/tts-models-languages-overview", "llmsTxt": "https://developers.deepgram.com/llms.txt", "openapi": "https://developers.deepgram.com/openapi.json", "capabilities": [ "speech.tts", "speech.streaming", "speech.voices", "speech.languages" ], "tags": [ "hosted", "no-card", "closed-source", "python", "typescript", "openapi", "llms-txt", "mcp", "streaming", "batch", "enterprise", "self-hosted" ], "lastRelease": "2026-09-29", "graded": true, "anchor": { "graded": true, "score": 73, "grade": "BB", "agentReady": true, "rank": 63, "ranked": true, "rankOf": 452, "categoryRank": 4, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 82, "maintenance": 73, "payments": 40, "reliability": 70, "schema": 95, "security": 70, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-10-01" }, "negative": 0, "verdict": "OpenAPI 3.1 and AsyncAPI files, llms.txt and Markdown pages. Requests can be kept for training unless each one sets `mip_opt_out=true`.", "strengths": [ "OpenAPI 3.1 and AsyncAPI files, llms.txt and Markdown pages", "Flux TTS's Interrupt event returns `text_spoken` and `text_remaining` on barge-in", "Keys carry roles and scopes, and browser tokens live 30 seconds", "Per-request logs through `GET /v1/projects/{project_id}/requests`, filterable by date and status", "$200 credit with no card, then Aura-2 at $0.030 per 1,000 characters" ], "weaknesses": [ "Requests can be kept for training unless each one sets `mip_opt_out=true`", "Flux TTS is English only and capped at 5 concurrent streams in the EU, Australia and India below Enterprise", "No SSML, and Flux TTS strips other vendors' tags with a warning", "Elevated Flux TTS errors for about four hours on 25 September 2026", "Aura-2 REST requests stop at 2,000 characters" ], "agentNotes": [ "Set `mip_opt_out=true` on every request if the text mustn't be kept for training.", "Split Aura-2 REST text under 2,000 characters or expect a 413.", "Pass `model` on `/v2/speak`, where it's required.", "Strip SSML before sending, since it's removed with an `INPUT_MARKUP_STRIPPED` warning.", "Back off exponentially on 429 and keep traffic in one project." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "BB", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 73 } ], "editorialScores": { "ergonomics": 82, "maintenance": 73, "payments": 40, "reliability": 70, "schema": 95, "security": 70, "transparency": 60 }, "provenanceScore": 90 }, "connect": { "http": "curl \"https://api.deepgram.com/v1/speak?model=aura-2-thalia-en\" \\\n -H \"Authorization: Token $DEEPGRAM_API_KEY\" -H \"content-type: application/json\" \\\n -d '{\"text\":\"Hello, how are you?\"}' -o hello.mp3", "claudeCode": "claude mcp add deepgram-docs --transport http https://api.dx.deepgram.com/kapa/mcp", "config": { "mcpServers": { "deepgram": { "args": [ "mcp" ], "command": "dg", "env": { "DEEPGRAM_API_KEY": "${DEEPGRAM_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/speech.tts", "tool": "https://letme.dev/deepgram-tts" }, "sameCompany": [ "deepgram-stt", "deepgram-voice-agent" ], "area": "voice", "unitPrices": [ { "item": "Flux TTS", "unit": "1m-chars", "usd": 45, "note": "pay as you go, $0.045 per 1,000 characters" }, { "item": "Aura-2", "unit": "1m-chars", "usd": 30, "note": "pay as you go" }, { "item": "Aura-1", "unit": "1m-chars", "usd": 15, "note": "pay as you go" }, { "item": "Aura-2 on Growth", "unit": "1m-chars", "usd": 27, "note": "prepaid annual plan from $4,000" } ], "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-tts.json", "live": { "slug": "deepgram-tts", "probe": { "target": "https://api.deepgram.com/v1", "method": "get", "lastAt": "2026-10-05T00:25:41.847839418Z", "lastOk": true, "lastStatus": 404, "lastMs": 335, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 347, "p95ms24h": 521, "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.deepgram.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-05T00:22:41.65676275Z" }, "versions": [ { "registry": "github", "name": "deepgram/deepgram-python-sdk", "version": "v7.12.0", "released": "2026-10-02", "seenAt": "2026-10-04T16:25:18.900755205Z" }, { "registry": "npm", "name": "@deepgram/sdk", "version": "5.14.0", "seenAt": "2026-10-04T16:25:16.604084571Z" }, { "registry": "pypi", "name": "deepctl", "version": "0.3.1", "released": "2026-09-29", "seenAt": "2026-10-04T16:25:17.004312351Z" }, { "registry": "pypi", "name": "deepgram-sdk", "version": "7.12.0", "released": "2026-10-02", "seenAt": "2026-10-04T16:25:16.891210762Z" } ], "githubStars": 468, "npmWeekly": 1147181, "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": "2026-10-04T15:17:31.890004033Z" }, "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" }, "updatedAt": "2026-10-05T00:25:41.847839418Z" } }, "b": { "slug": "elevenlabs-tts", "name": "ElevenLabs Text to Speech API + MCP", "vendor": "ElevenLabs", "vendorUrl": "https://elevenlabs.io", "kind": "model", "category": "text-to-speech", "summary": "ElevenLabs text-to-speech over REST, HTTP streaming and WebSocket.", "url": "https://www.anchorterminal.com/tools/elevenlabs-tts", "markdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-tts.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-tts.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/elevenlabs-tts.json", "repo": "https://github.com/elevenlabs/elevenlabs-python", "license": "MIT (SDKs)", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.elevenlabs.io/v1", "packages": [ { "registry": "npm", "name": "@elevenlabs/elevenlabs-js" }, { "registry": "pypi", "name": "elevenlabs" }, { "registry": "pypi", "name": "elevenlabs-mcp" } ], "auth": "mixed", "authNotes": "`xi-api-key` header for the REST and WebSocket APIs. The hosted MCP at `https://api.elevenlabs.io/v1/mcp` signs in with OAuth, scoped to Agents and Text to Speech. The older local `elevenlabs-mcp` server reads `ELEVENLABS_API_KEY` and is now deprecated. Data residency hosts exist for the EU, India and Singapore.", "pricing": "freemium", "pricingNotes": "API usage is priced per 1,000 characters. Eleven v4, v3 and Multilingual v2 cost $0.08, v4 Turbo, v3 Conversational and Flash/Turbo $0.04. Eleven v4 is at $0.022 and v4 Turbo at $0.011 until 2026-10-12. Plans are Free (10,000 v4 characters), Starter $6, Creator $22 ($11 first month), Pro $99, Scale $299 and Business $990 a month, with pay-as-you-go as an alternative. Commercial use starts at Starter (https://elevenlabs.io/pricing/api).", "priceSummary": "$6 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing. Subscription or pay-as-you-go card billing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3122, "npmWeekly": 1063065, "pypiWeekly": 2223099, "asOf": "2026-09-30" }, "docsUrl": "https://elevenlabs.io/docs/overview/capabilities/text-to-speech", "llmsTxt": "https://elevenlabs.io/docs/llms.txt", "openapi": "https://api.elevenlabs.io/openapi.json", "registryName": "io.elevenlabs/mcp", "capabilities": [ "speech.tts", "speech.streaming", "speech.voices", "speech.ssml", "speech.languages" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "python", "typescript", "openapi", "llms-txt", "mcp", "streaming", "enterprise" ], "lastRelease": "2026-09-28", "graded": true, "anchor": { "graded": true, "score": 73.1, "grade": "BB", "agentReady": true, "rank": 61, "ranked": true, "rankOf": 452, "categoryRank": 3, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 82, "maintenance": 77, "payments": 40, "reliability": 80, "schema": 94, "security": 60, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-10-01" }, "negative": 0, "verdict": "Keys can be limited to chosen endpoints and given a credit quota, and service accounts hold keys that don't belong to a person. Content may be used for training unless you opt out under Data use, and the opt-out only applies going forward.", "strengths": [ "Keys can be limited to chosen endpoints and given a credit quota, and service accounts hold keys that don't belong to a person", "Error reference with about 90 codes, each carrying `type`, `code`, `message` and `request_id`", "OpenAPI file, llms.txt and Markdown twins of every docs page", "Free plan with 10,000 v4 characters a month and no card", "Weekly dated changelog, 16 entries between 6 July and 28 September 2026" ], "weaknesses": [ "Content may be used for training unless you opt out under Data use, and the opt-out only applies going forward", "Zero retention (`enable_logging=false`) is Enterprise only, and TTS text and audio are kept by default", "No SLA published for self-serve plans", "Eleven v4 and v3 ignore SSML `\u003cbreak\u003e` tags", "v4 rises from $0.022 to $0.08 per 1,000 characters after 2026-10-12" ], "agentNotes": [ "Call Eleven v4 through Text to Dialogue, not `/v1/text-to-speech`.", "Spell out numbers yourself on `eleven_flash_v2_5`, which doesn't normalise them by default, and turning that on is Enterprise only.", "On 429 read `code`, back off on `rate_limit_exceeded` and wait for running requests on `concurrent_limit_exceeded`.", "Keep each request under 10,000 characters on v4 and Multilingual v2, 5,000 on v3.", "Give the agent a key scoped to Text to Speech with a credit quota." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "BB", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 73.1 } ], "editorialScores": { "ergonomics": 82, "maintenance": 77, "payments": 40, "reliability": 80, "schema": 94, "security": 60, "transparency": 50 }, "provenanceScore": 92 }, "connect": { "http": "curl -X POST \"https://api.elevenlabs.io/v1/text-to-speech/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128\" \\\n -H \"xi-api-key: $ELEVENLABS_API_KEY\" -H \"content-type: application/json\" -o speech.mp3 \\\n -d '{\"text\":\"Your table is booked for seven.\",\"model_id\":\"eleven_flash_v2_5\"}'", "claudeCode": "claude mcp add --transport http elevenlabs https://api.elevenlabs.io/v1/mcp", "config": { "mcpServers": { "elevenlabs": { "args": [ "elevenlabs-mcp" ], "command": "uvx", "env": { "ELEVENLABS_API_KEY": "${ELEVENLABS_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/speech.tts", "tool": "https://letme.dev/elevenlabs-tts" }, "sameCompany": [ "elevenlabs-music", "elevenlabs-scribe", "elevenlabs-agents", "elevenlabs-voice-cloning" ], "area": "voice", "unitPrices": [ { "item": "Eleven v4", "unit": "1m-chars", "usd": 80, "note": "$22 until 2026-10-12" }, { "item": "Eleven v4 Turbo", "unit": "1m-chars", "usd": 40, "note": "$11 until 2026-10-12" }, { "item": "Eleven v3 / Multilingual v2", "unit": "1m-chars", "usd": 80 }, { "item": "Flash v2.5 / v3 Conversational", "unit": "1m-chars", "usd": 40 }, { "item": "Starter plan", "unit": "month", "usd": 6, "note": "about 273,000 v4 characters" }, { "item": "Creator plan", "unit": "month", "usd": 22, "note": "about 1M v4 characters" } ], "provenance": { "legalEntity": "Eleven Labs Inc.", "domain": "elevenlabs.io", "domainRegistered": "2021-12-15", "endpointOnVendorDomain": true, "terms": "https://elevenlabs.io/terms-of-use", "privacy": "https://elevenlabs.io/privacy-policy", "statusPage": "https://status.elevenlabs.io", "changelog": "https://elevenlabs.io/docs/changelog", "securityTxt": "valid", "checked": "2026-09-30", "score": 92 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/elevenlabs-tts.json", "live": { "slug": "elevenlabs-tts", "probe": { "target": "https://api.elevenlabs.io/v1", "method": "get", "lastAt": "2026-10-05T00:25:42.518269032Z", "lastOk": true, "lastStatus": 404, "lastMs": 119, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 118, "p95ms24h": 152, "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.elevenlabs.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-05T00:22:43.719122539Z" }, "versions": [ { "registry": "github", "name": "elevenlabs/elevenlabs-python", "version": "v2.70.0", "released": "2026-09-28", "seenAt": "2026-10-04T16:26:21.788463226Z" }, { "registry": "mcp-registry", "name": "io.elevenlabs/mcp", "version": "1.0.0", "seenAt": "2026-10-04T23:42:40.113054682Z" }, { "registry": "npm", "name": "@elevenlabs/elevenlabs-js", "version": "2.70.0", "seenAt": "2026-10-04T16:26:19.471925531Z" }, { "registry": "pypi", "name": "elevenlabs", "version": "2.70.0", "released": "2026-09-28", "seenAt": "2026-10-04T16:26:19.782214789Z" }, { "registry": "pypi", "name": "elevenlabs-mcp", "version": "0.12.2", "released": "2026-08-04", "seenAt": "2026-10-04T16:26:19.89529303Z" } ], "githubStars": 3129, "npmWeekly": 1135260, "pypiWeekly": 2247596, "securityTxt": { "url": "https://elevenlabs.io/.well-known/security.txt", "state": "valid", "expires": "2027-03-01T00:00:00.000Z", "checkedAt": "2026-10-04T15:15:51.968224287Z" }, "llmsTxt": { "url": "https://elevenlabs.io/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:54.328986649Z" }, "domain": { "domain": "elevenlabs.io", "checkedAt": "2026-10-04T13:07:28.958673807Z" }, "updatedAt": "2026-10-05T00:25:42.518269032Z" } }, "summary": "ElevenLabs Text to Speech API + MCP has a score of 73.1 (BB) against Deepgram Text-to-Speech (Aura-2, Flux TTS)'s 73 (BB). Both do speech tts. The largest gap is reliability, 10 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/deepgram-tts-vs-elevenlabs-tts", "json": "https://www.anchorterminal.com/compare/deepgram-tts-vs-elevenlabs-tts.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/deepgram-tts-vs-elevenlabs-tts.md", "slim": "https://www.anchorterminal.com/compare/deepgram-tts-vs-elevenlabs-tts.min.md" }, "markdown": "ElevenLabs Text to Speech API + MCP has a score of 73.1 (BB) against Deepgram Text-to-Speech (Aura-2, Flux TTS)'s 73 (BB). Both do speech tts. The largest gap is reliability, 10 points.\n\n- Deepgram Text-to-Speech (Aura-2, Flux TTS): grade BB, 73/100, rank #63 of 452. Markdown https://www.anchorterminal.com/tools/deepgram-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/deepgram-tts.json\n- ElevenLabs Text to Speech API + MCP: grade BB, 73.1/100, rank #61 of 452. Markdown https://www.anchorterminal.com/tools/elevenlabs-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-tts.json\n\n## Which one, for what\n\nPick Deepgram Text-to-Speech (Aura-2, Flux TTS) for security \u0026 auth (+10).\n\nPick ElevenLabs Text to Speech API + MCP for reliability (+10).\n\n## Score by category\n\n| Category | Weight | Deepgram Text-to-Speech (Aura-2, Flux TTS) | ElevenLabs Text to Speech API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 70 | 80 | ElevenLabs Text to Speech API + MCP +10 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 95 | 94 | Deepgram Text-to-Speech (Aura-2, Flux TTS) +1 |\n| Agent ergonomics | 13% (16.2 this run) | 82 | 82 | even |\n| Security \u0026 auth | 14% (17.5 this run) | 70 | 60 | Deepgram Text-to-Speech (Aura-2, Flux TTS) +10 |\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) | 73 | 77 | ElevenLabs Text to Speech API + MCP +4 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 75 | 71 | Deepgram Text-to-Speech (Aura-2, Flux TTS) +4 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **73 · BB** | **73.1 · BB** | |\n\n## Facts side by side\n\n| Fact | Deepgram Text-to-Speech (Aura-2, Flux TTS) | ElevenLabs Text to Speech API + MCP |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Deepgram | ElevenLabs |\n| Hosted endpoint | `https://api.deepgram.com/v1` | `https://api.elevenlabs.io/v1` |\n| Transports | HTTP, Streamable HTTP, stdio, SSE (legacy) | HTTP, Streamable HTTP, stdio |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | MIT (SDKs) | MIT (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 | `io.elevenlabs/mcp` |\n| Last release | 2026-09-29 | 2026-09-28 |\n| Popularity | 468 stars, 1.1M npm/wk, 805k PyPI/wk | 3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk |\n| Agent reviews | 3.5/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**Deepgram Text-to-Speech (Aura-2, Flux TTS).** OpenAPI 3.1 and AsyncAPI files, llms.txt and Markdown pages. Requests can be kept for training unless each one sets `mip_opt_out=true`.\n\n**ElevenLabs Text to Speech API + MCP.** Keys can be limited to chosen endpoints and given a credit quota, and service accounts hold keys that don't belong to a person. Content may be used for training unless you opt out under Data use, and the opt-out only applies going forward.\n\n## Before you call either\n\n### Deepgram Text-to-Speech (Aura-2, Flux TTS)\n\n1. Set `mip_opt_out=true` on every request if the text mustn't be kept for training.\n2. Split Aura-2 REST text under 2,000 characters or expect a 413.\n3. Pass `model` on `/v2/speak`, where it's required.\n4. Strip SSML before sending, since it's removed with an `INPUT_MARKUP_STRIPPED` warning.\n5. Back off exponentially on 429 and keep traffic in one project.\n\n### ElevenLabs Text to Speech API + MCP\n\n1. Call Eleven v4 through Text to Dialogue, not `/v1/text-to-speech`.\n2. Spell out numbers yourself on `eleven_flash_v2_5`, which doesn't normalise them by default, and turning that on is Enterprise only.\n3. On 429 read `code`, back off on `rate_limit_exceeded` and wait for running requests on `concurrent_limit_exceeded`.\n4. Keep each request under 10,000 characters on v4 and Multilingual v2, 5,000 on v3.\n5. Give the agent a key scoped to Text to Speech with a credit quota.\n\n## Other comparisons with Deepgram Text-to-Speech (Aura-2, Flux TTS) or ElevenLabs Text to Speech API + MCP\n\n- [Amazon Polly vs Deepgram Text-to-Speech (Aura-2, Flux TTS)](https://www.anchorterminal.com/compare/amazon-polly-vs-deepgram-tts.md)\n- [Amazon Polly vs ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-elevenlabs-tts.md)\n- [Azure AI Speech text-to-speech vs Deepgram Text-to-Speech (Aura-2, Flux TTS)](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-deepgram-tts.md)\n- [Azure AI Speech text-to-speech vs ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-elevenlabs-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Deepgram Text-to-Speech (Aura-2, Flux TTS)](https://www.anchorterminal.com/compare/cartesia-tts-vs-deepgram-tts.md)\n- [Cartesia Sonic TTS API + MCP vs ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/compare/cartesia-tts-vs-elevenlabs-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/deepgram-tts-vs-murf-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/deepgram-tts-vs-playht-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/deepgram-tts-vs-resemble-ai-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/deepgram-tts-vs-rime-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/deepgram-tts-vs-soniox-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-murf-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-playht-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-resemble-ai-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-rime-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-soniox-tts.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs ElevenLabs Text to Speech API + MCP", "url": "" } ], "description": "ElevenLabs Text to Speech API + MCP has a score of 73.1 (BB) against Deepgram Text-to-Speech (Aura-2, Flux TTS)'s 73 (BB). Both do speech tts. The largest gap is reliability, 10 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Deepgram Text-to-Speech (Aura-2, Flux TTS) BB 73", "ElevenLabs Text to Speech API + MCP BB 73.1", "scores" ], "h1": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs ElevenLabs Text to Speech API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-deepgram-tts-vs-elevenlabs-tts.png", "path": "/compare/deepgram-tts-vs-elevenlabs-tts", "published": "2026-10-01", "section": "tools", "title": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs ElevenLabs Text to…", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/deepgram-tts-vs-elevenlabs-tts" }, "tokens": { "markdown": 1850, "slim": 380 }, "version": 1 }