{ "data": { "a": { "slug": "inworld-tts", "name": "Inworld Realtime TTS-2", "vendor": "Inworld AI", "vendorUrl": "https://inworld.ai", "kind": "model", "category": "text-to-speech", "summary": "Inworld's hosted text-to-speech models, `inworld-tts-2` and `inworld-tts-2-flash`, over REST, HTTP streaming, WebSocket, async jobs and an OpenAI-compatible endpoint. TTS-2 takes bracketed steering, and an opt-in Reasoning step writes the delivery direction itself.", "url": "https://www.anchorterminal.com/tools/inworld-tts", "markdownUrl": "https://www.anchorterminal.com/tools/inworld-tts.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/inworld-tts.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/inworld-tts.json", "license": "Proprietary service under Inworld's Terms of Service. The Node.js SDK `@inworld/tts` and the CLI `@inworld/cli` are MIT on npm", "transports": [ "http", "websocket" ], "remoteUrl": "https://api.inworld.ai", "packages": [ { "registry": "npm", "name": "@inworld/tts" }, { "registry": "pypi", "name": "inworld-tts" }, { "registry": "npm", "name": "@inworld/cli" } ], "auth": "api-key", "authNotes": "Every call sends `Authorization: Basic` with the Base64 `key_id:secret` credential copied from the Portal or printed by the CLI. Keys belong to a workspace, are deleted to revoke, and have write toggles only for the Voice and Router APIs, so no key is limited to TTS. Browser and mobile clients use single-use tokens minted server-side, valid 15 minutes by default.", "pricing": "freemium", "pricingNotes": "TTS-2 costs $25 per million characters on the free On-Demand plan, falling to $20, $17.50, $15 and $12.50 on the $25, $100, $300 and $1,500 monthly plans, and from $5 on Enterprise. TTS-2 Flash runs $15 down to $7. On-Demand includes up to 70 minutes of TTS with no card. Steering tags count as characters, while `synthesisContext` and `reasoningContext` aren't billed. Batch costs 20 per cent less (checked 2026-10-30).", "priceSummary": "$25 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, the TTS docs, the billing page or the pricing page (checked 2026-10-30). Usage is drawn from prepaid plan credits, card top-ups of at least $10 or auto-reload.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 3632, "pypiWeekly": null, "asOf": "2026-10-30" }, "docsUrl": "https://docs.inworld.ai/tts/tts", "llmsTxt": "https://docs.inworld.ai/llms.txt", "capabilities": [ "speech.tts", "speech.streaming", "speech.voices", "speech.ssml", "speech.languages", "speech.batch", "voice.clone", "voice.design" ], "tags": [ "hosted", "official", "closed-source", "freemium", "free-tier", "no-card", "llms-txt", "streaming", "openai-compatible", "reasoning", "multilingual", "async-jobs", "batch", "typescript", "python", "cli", "mcp", "status-page", "soc2", "enterprise" ], "lastRelease": "2026-10-28", "graded": true, "anchor": { "graded": true, "score": 58.3, "grade": "C", "agentReady": false, "rank": 687, "ranked": true, "rankOf": 1243, "categoryRank": 10, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 68, "maintenance": 68, "payments": 40, "reliability": 62, "schema": 60, "security": 61, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-30" }, "negative": -2, "negativeNotes": [ "30 October 2026. Inworld's Realtime TTS-2 page shows Realtime TTS-2 as #1 for voice quality on the Artificial Analysis Speech Arena and says the ranks come from the live arena, not hardcoded. Artificial Analysis's provider-voice leaderboard on the same day put Realtime TTS-2 8th (Elo 1,267) behind Eleven v4 Turbo (1,336). The page also says the table was verified in May 2026. The deduction lapses if the page is corrected or the rank returns. Sources: https://inworld.ai/blog/realtime-tts-2 and https://artificialanalysis.ai/text-to-speech/leaderboard/provider-voice (-2)" ], "verdict": "TTS-2 takes bracketed steering, and opt-in Reasoning writes a delivery direction from the text and up to 600 characters of context, returning it in the response. Per-character prices are public and the free plan needs no card. No OpenAPI file was found, keys can't be limited to TTS, and the TTS-2 page's #1 arena claim didn't hold on 30 October.", "bestFor": "Agents that generate replies or stories at runtime and want delivery chosen from context without writing tags, and for per-message or pre-generated audio.", "strengths": [ "Reasoning returns the direction it applied as `reasoningInstruction`, so an agent can log it and reuse it as an inline tag", "Per-character prices are public, from $25 per million characters for TTS-2 on the free plan to $12.50 on Growth", "REST, HTTP streaming, WebSocket, async jobs and an OpenAI-compatible `/v1/audio/speech` endpoint", "llms.txt, Markdown twins of every page and a keyless docs MCP server at docs.inworld.ai/mcp", "Single-use client tokens, 15 minutes by default, keep the API key off browsers and phones" ], "weaknesses": [ "No OpenAPI or other machine-readable contract was found for the TTS API", "API keys can't be limited to TTS. Write toggles cover only the Voice and Router APIs", "The 28 October model update replaced `inworld-tts-2` in place, with no dated snapshot to pin", "Zero data retention is Enterprise only or a Growth add-on, and the SLA is Enterprise only", "The TTS-2 page claims #1 on the Artificial Analysis Speech Arena, which ranked it 8th on 30 October 2026" ], "agentNotes": [ "Send the copied Base64 credential as-is in `Authorization: Basic`. Don't encode it again.", "Set `modelId` explicitly, because SDK defaults may name deprecated models.", "Keep text under 2,000 UTF-16 units on `/tts/v1/voice` and 4,000 on `voice:stream`, or use an async job.", "Turn on Reasoning with `synthesisContext.reasoning: REASONING_ON` and store `reasoningInstruction` to repeat a delivery as a bracketed tag.", "On 429 or error code 8, back off exponentially with jitter. No Retry-After header is documented." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 58.3 } ], "editorialScores": { "ergonomics": 68, "maintenance": 68, "payments": 40, "reliability": 62, "schema": 60, "security": 61, "transparency": 51 }, "provenanceScore": 75, "checked": { "categories": { "ergonomics": "2026-10-30", "maintenance": "2026-10-30", "payments": "2026-10-30", "reliability": "2026-10-30", "schema": "2026-10-30", "security": "2026-10-30", "transparency": "2026-10-30" }, "last": "2026-10-30", "oldest": "2026-10-30", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install @inworld/tts", "http": "curl -X POST https://api.inworld.ai/tts/v1/voice -H \"Authorization: Basic $INWORLD_API_KEY\" -H 'Content-Type: application/json' -d '{\"text\": \"We made it. I honestly did not think we would.\", \"voiceId\": \"Dennis\", \"modelId\": \"inworld-tts-2\", \"synthesisContext\": {\"reasoning\": \"REASONING_ON\"}}'", "claudeCode": "claude mcp add inworld -- inworld mcp" }, "letme": { "capability": "https://letme.dev/speech.tts", "tool": "https://letme.dev/inworld-tts" }, "area": "voice", "unitPrices": [ { "item": "Realtime TTS-2, On-Demand (free plan, pay as you go)", "unit": "1m-chars", "usd": 25, "note": "pricing page, checked 30 October 2026" }, { "item": "Realtime TTS-2 on Growth", "unit": "1m-chars", "usd": 12.5, "note": "$20 on Creator, $17.50 on Builder, $15 on Developer, from $5 on Enterprise" }, { "item": "Realtime TTS-2 Flash, On-Demand", "unit": "1m-chars", "usd": 15, "note": "falls to $7 on Growth" }, { "item": "Creator plan", "unit": "month", "usd": 25, "note": "$25 in credits a month" }, { "item": "Developer plan", "unit": "month", "usd": 300, "note": "$300 in credits a month, priority email support" } ], "provenance": { "legalEntity": "Theai, Inc. dba Inworld AI", "domain": "inworld.ai", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://inworld.ai/terms", "privacy": "https://inworld.ai/privacy", "statusPage": "https://status.inworld.ai", "changelog": "https://docs.inworld.ai/release-notes/tts", "securityTxt": "none", "checked": "2026-10-30", "notes": [ "The Terms of Service (effective 11 June 2025) are an agreement with Theai, Inc. dba Inworld AI under California law, with courts in Santa Clara. The Privacy Notice (last updated 18 January 2026) names Theai, Inc.", "inworld.ai/.well-known/security.txt returns 404. The security page links a vulnerability report form.", "status.inworld.ai runs the open-source issue-status app, which draws incidents from GitHub issues in inworld-ai/inworld-issue-status. Its history wasn't read, because GitHub's robots.txt couldn't be read from our environment.", "inworld.ai's robots.txt allows Claude agents on the paths read and sets `Content-Signal: ai-train=no, search=yes, ai-input=no`. docs.inworld.ai has no such signal.", "The domain's registration date wasn't established, because the RDAP lookup failed.", "firstReleased is the TTS-2 launch entry in the TTS release notes, 5 May 2026. Inworld's TTS-2 page dates general availability to 31 August 2026, and Reasoning shipped on 28 October 2026." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/inworld-tts.json", "live": { "slug": "inworld-tts", "probe": { "target": "https://api.inworld.ai", "method": "get", "lastAt": "2026-10-31T03:04:02.49858712Z", "lastOk": true, "lastStatus": 200, "lastMs": 146, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 158, "p95ms24h": 339, "samples24h": 16, "samples30d": 16, "days": [ { "date": "2026-10-31", "probes": 16, "ok": 16 } ] }, "vendorStatus": { "page": "https://status.inworld.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-31T03:04:35.255164605Z" }, "updatedAt": "2026-10-31T03:04:35.255164605Z" } }, "answer": "Inworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema \u0026 documentation.", "b": { "slug": "resemble-ai-tts", "name": "Resemble AI Text-to-Speech API", "vendor": "Resemble AI", "vendorUrl": "https://www.resemble.ai", "kind": "model", "category": "text-to-speech", "summary": "Resemble's TTS API on its current Resemble Ultra model, which the changelog says is powered by xAI.", "url": "https://www.anchorterminal.com/tools/resemble-ai-tts", "markdownUrl": "https://www.anchorterminal.com/tools/resemble-ai-tts.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/resemble-ai-tts.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/resemble-ai-tts.json", "repo": "https://github.com/resemble-ai/resemble-node", "transports": [ "http" ], "remoteUrl": "https://app.resemble.ai/api/v2", "packages": [ { "registry": "npm", "name": "@resemble/node" }, { "registry": "pypi", "name": "resemble" } ], "auth": "api-key", "authNotes": "`Authorization: Bearer` API key on every server. Synthesis runs on `f.cluster.resemble.ai`, voices and projects on `app.resemble.ai/api/v2`, streaming on `wss://websocket.cluster.resemble.ai`. Some synchronous examples in the docs leave out the `Bearer` prefix.", "pricing": "usage", "pricingNotes": "Billed per second of generated audio. Flex has no subscription and no card to sign up, at $0.00067 a second (about $0.04 a minute). Team ($350 a month, $280 billed annually) and Business ($1,000, $800 annually) cut that to $0.0005 a second (about $0.03 a minute). WebSocket streaming needs Business. Extra seats cost $20 on Flex and $200 on Team and Business. Rates come from the public plans API, since the pricing page lists only detection products (https://app.resemble.ai/billing/api/v1/plans).", "priceSummary": "$350 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 15, "npmWeekly": 8053, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.resemble.ai/voice-generation/text-to-speech", "llmsTxt": "https://docs.resemble.ai/llms.txt", "openapi": "https://docs.resemble.ai/openapi.json", "capabilities": [ "speech.tts", "speech.streaming", "speech.voices", "speech.ssml" ], "tags": [ "hosted", "no-card", "closed-source", "python", "typescript", "openapi", "llms-txt", "streaming", "watermark", "enterprise" ], "lastRelease": "2026-06-30", "graded": true, "anchor": { "graded": true, "score": 50.3, "grade": "D", "agentReady": false, "rank": 941, "ranked": true, "rankOf": 1243, "categoryRank": 12, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 46, "maintenance": 31, "payments": 15, "reliability": 75, "schema": 75, "security": 48, "transparency": 65 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -3, "negativeNotes": [ "2026-06-29. Resemble began deprecating every earlier TTS model, including the Chatterbox family, and the model-versions page now says voices on them can no longer generate audio until upgraded to Resemble Ultra. We found no effective date or notice period. Small deduction because the change is documented and upgrade is self-serve. https://www.resemble.ai/changelog and https://docs.resemble.ai/getting-started/model-versions.md" ], "verdict": "OpenAPI file in JSON and YAML, llms.txt and Markdown pages. Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published.", "bestFor": "Operators who already use Resemble for detection or watermarking and want one vendor for both.", "strengths": [ "OpenAPI file in JSON and YAML, llms.txt and Markdown pages", "SSML with prompt, temperature and exaggeration controls and inline tags such as `[laugh]`", "Status page checks Ultra HTTP synthesis directly, 100 per cent over 90 days", "Flex has no subscription fee, $0.00067 a second of audio", "Privacy policy says customer voice data doesn't train general-purpose models" ], "weaknesses": [ "Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published", "WebSocket streaming only on Business at $1,000 a month", "Errors are `success: false` and a message, no status codes listed", "Pricing lives in a JSON plans endpoint, not on the pricing page", "No changelog entry since 2026-06-30" ], "agentNotes": [ "Check the voice's model before synthesis, since voices on pre-Ultra models fail until upgraded.", "Keep each synchronous request under 2,000 characters.", "Decode `audio_content` from base64 on `/synthesize`, or call `/stream` for raw WAV chunks.", "Send `Authorization: Bearer`, since some doc examples leave out the prefix.", "Log the request ID with every failure, since the error body has no code." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 50.3 } ], "editorialScores": { "ergonomics": 46, "maintenance": 31, "payments": 15, "reliability": 75, "schema": 75, "security": 48, "transparency": 50 }, "provenanceScore": 80, "checked": { "categories": { "ergonomics": "2026-10-01", "maintenance": "2026-10-01", "payments": "2026-10-01", "reliability": "2026-10-01", "schema": "2026-10-01", "security": "2026-10-01", "transparency": "2026-10-01" }, "last": "2026-10-01", "lastMoved": "2026-10-29", "oldest": "2026-10-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://f.cluster.resemble.ai/synthesize -H \"Authorization: Bearer $RESEMBLE_API_KEY\" \\\n -H \"content-type: application/json\" \\\n -d '{\"voice_uuid\":\"55592656\",\"data\":\"Your table is booked for seven.\",\"output_format\":\"mp3\"}' \\\n | jq -r .audio_content | base64 --decode \u003e speech.mp3" }, "letme": { "capability": "https://letme.dev/speech.tts", "tool": "https://letme.dev/resemble-ai-tts" }, "sameCompany": [ "resemble-ai-voice-cloning" ], "area": "voice", "unitPrices": [ { "item": "Resemble Ultra TTS on Flex", "unit": "audio-minute", "usd": 0.0402, "note": "$0.00067 a second, no subscription" }, { "item": "Resemble Ultra TTS on Team or Business", "unit": "audio-minute", "usd": 0.03, "note": "$0.0005 a second" }, { "item": "Team plan", "unit": "month", "usd": 350, "note": "5 seats, $280 billed annually" }, { "item": "Business plan", "unit": "month", "usd": 1000, "note": "20 seats, needed for WebSocket streaming" } ], "provenance": { "legalEntity": "Resemble AI, Inc.", "domain": "resemble.ai", "domainRegistered": "2018-11-12", "endpointOnVendorDomain": true, "terms": "https://www.resemble.ai/terms-of-service", "privacy": "https://www.resemble.ai/privacy-policy", "statusPage": "https://status.resemble.ai", "changelog": "https://www.resemble.ai/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The privacy policy gives the address as 812 W Dana St, Mountain View, California" ], "score": 80 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/resemble-ai-tts.json", "live": { "slug": "resemble-ai-tts", "probe": { "target": "https://app.resemble.ai/api/v2", "method": "get", "lastAt": "2026-10-31T03:04:12.540220709Z", "lastOk": true, "lastStatus": 404, "lastMs": 157, "authRequired": false, "uptime24h": 100, "uptime30d": 99.95, "p50ms24h": 325, "p95ms24h": 404, "samples24h": 249, "samples30d": 7731, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 275 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 270 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 271 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 32, "ok": 32 } ] }, "vendorStatus": { "page": "https://status.resemble.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-31T03:05:13.975349728Z" }, "versions": [ { "registry": "npm", "name": "@resemble/node", "version": "3.5.3", "seenAt": "2026-10-30T14:41:43.330023672Z" }, { "registry": "pypi", "name": "resemble", "version": "1.9.0", "released": "2026-04-06", "seenAt": "2026-10-30T14:41:44.207235989Z" } ], "githubStars": 15, "npmWeekly": 2565, "pypiWeekly": 212, "securityTxt": { "url": "https://resemble.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-30T15:39:10.43921135Z" }, "llmsTxt": { "url": "https://docs.resemble.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-30T15:08:35.347504696Z" }, "domain": { "domain": "resemble.ai", "registered": "2018-11-12", "source": "https://rdap.identitydigital.services/rdap/domain/resemble.ai", "checkedAt": "2026-10-25T13:58:22.994654909Z" }, "pages": [ { "url": "https://www.resemble.ai/changelog", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-30T05:59:44.891122637Z", "changedAt": "2026-10-30T05:59:44.891122637Z", "fingerprint": "6e8a5b55c7b6" }, { "url": "https://www.resemble.ai/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-30T05:59:47.087361583Z", "changedAt": "2026-10-30T05:59:47.087361583Z", "fingerprint": "77191184484b" }, { "url": "https://www.resemble.ai/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-30T05:59:49.435860408Z", "changedAt": "2026-10-30T05:59:49.435860408Z", "fingerprint": "787894577af2" } ], "github": { "repo": "resemble-ai/resemble-node", "checkedAt": "2026-10-26T08:00:52.450242131Z", "stars": 15, "archived": false, "issuesEnabled": true, "pushedAt": "2026-04-06T21:14:23Z", "openIssues": 3, "openPRs": 1, "issuesOpened90d": 0, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 4, "unanswered": 3, "medianDays": 50.5 } }, "updatedAt": "2026-10-31T03:05:13.975349728Z" } }, "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Inworld AI", "b": "Resemble AI", "name": "Vendor" }, { "a": "https://api.inworld.ai", "b": "https://app.resemble.ai/api/v2", "name": "Hosted endpoint" }, { "a": "HTTP, websocket", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "$12.50 per 1M characters", "b": "$0.03 per minute of audio", "name": "Price for text-to-speech" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Inworld's Terms of Service. The Node.js SDK `@inworld/tts` and the CLI `@inworld/cli` are MIT on npm", "b": "none", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-28", "b": "2026-06-30", "name": "Last release" }, { "a": "2025-06-11", "b": "2026-08-14", "name": "Terms last updated" }, { "a": "2026-01-18", "b": "2026-08-14", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3.6k npm/wk", "b": "15 stars, 8.1k npm/wk", "name": "Popularity" }, { "a": "none", "b": "2/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Inworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema \u0026 documentation.", "question": "Which is better for AI agents, Inworld Realtime TTS-2 or Resemble AI Text-to-Speech API?" }, { "answer": "Both need an API key.", "question": "Do Inworld Realtime TTS-2 and Resemble AI Text-to-Speech API need an API key?" }, { "answer": "Yes. Inworld Realtime TTS-2 has a hosted endpoint at https://api.inworld.ai and Resemble AI Text-to-Speech API at https://app.resemble.ai/api/v2.", "question": "Can an agent call Inworld Realtime TTS-2 and Resemble AI Text-to-Speech API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 68 against 46", "Security \u0026 auth, 61 against 48", "Payments \u0026 pricing, 40 against 15", "Maintenance \u0026 community, 68 against 31" ], "also": null, "goodFor": "Agents that generate replies or stories at runtime and want delivery chosen from context without writing tags, and for per-message or pre-generated audio.", "slug": "inworld-tts", "watchFor": "No OpenAPI or other machine-readable contract was found for the TTS API" }, { "aheadOn": [ "Reliability, 75 against 62", "Schema \u0026 documentation, 75 against 60" ], "also": null, "goodFor": "Operators who already use Resemble for detection or watermarking and want one vendor for both.", "slug": "resemble-ai-tts", "watchFor": "Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published" } ], "job": { "capability": "speech.tts", "name": "Text-to-speech" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-polly-vs-inworld-tts.json", "title": "Amazon Polly vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/amazon-polly-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/amazon-polly-vs-resemble-ai-tts.json", "title": "Amazon Polly vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/amazon-polly-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-inworld-tts.json", "title": "Azure AI Speech text-to-speech vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-resemble-ai-tts.json", "title": "Azure AI Speech text-to-speech vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/cartesia-tts-vs-inworld-tts.json", "title": "Cartesia Sonic TTS API + MCP vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/cartesia-tts-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/cartesia-tts-vs-resemble-ai-tts.json", "title": "Cartesia Sonic TTS API + MCP vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/cartesia-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-tts.json", "title": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/deepgram-tts-vs-resemble-ai-tts.json", "title": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/deepgram-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-inworld-tts.json", "title": "ElevenLabs Text to Speech API + MCP vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-resemble-ai-tts.json", "title": "ElevenLabs Text to Speech API + MCP vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-inworld-tts.json", "title": "Fish Audio TTS API vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts.json", "title": "Fish Audio TTS API vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/heygen-voice-vs-inworld-tts.json", "title": "HeyGen Voice vs Inworld Realtime TTS-2", "url": "https://www.anchorterminal.com/compare/heygen-voice-vs-inworld-tts" }, { "json": "https://www.anchorterminal.com/compare/heygen-voice-vs-resemble-ai-tts.json", "title": "HeyGen Voice vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/heygen-voice-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/inworld-tts-vs-murf-tts.json", "title": "Inworld Realtime TTS-2 vs Murf TTS API + MCP", "url": "https://www.anchorterminal.com/compare/inworld-tts-vs-murf-tts" }, { "json": "https://www.anchorterminal.com/compare/inworld-tts-vs-playht-tts.json", "title": "Inworld Realtime TTS-2 vs PlayHT Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/inworld-tts-vs-playht-tts" }, { "json": "https://www.anchorterminal.com/compare/inworld-tts-vs-rime-tts.json", "title": "Inworld Realtime TTS-2 vs Rime TTS API + MCP", "url": "https://www.anchorterminal.com/compare/inworld-tts-vs-rime-tts" }, { "json": "https://www.anchorterminal.com/compare/inworld-tts-vs-soniox-tts.json", "title": "Inworld Realtime TTS-2 vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/inworld-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/murf-tts-vs-resemble-ai-tts.json", "title": "Murf TTS API + MCP vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/murf-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/playht-tts-vs-resemble-ai-tts.json", "title": "PlayHT Text-to-Speech API vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/playht-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-rime-tts.json", "title": "Resemble AI Text-to-Speech API vs Rime TTS API + MCP", "url": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-rime-tts" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts.json", "title": "Resemble AI Text-to-Speech API vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts" } ], "scores": [ { "by": 13, "edge": "resemble-ai-tts", "inworld-tts": 62, "key": "reliability", "name": "Reliability", "resemble-ai-tts": 75, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 15, "edge": "resemble-ai-tts", "inworld-tts": 60, "key": "schema", "name": "Schema \u0026 documentation", "resemble-ai-tts": 75, "weight": 13 }, { "by": 22, "edge": "inworld-tts", "inworld-tts": 68, "key": "ergonomics", "name": "Agent ergonomics", "resemble-ai-tts": 46, "weight": 13 }, { "by": 13, "edge": "inworld-tts", "inworld-tts": 61, "key": "security", "name": "Security \u0026 auth", "resemble-ai-tts": 48, "weight": 14 }, { "by": 25, "edge": "inworld-tts", "inworld-tts": 40, "key": "payments", "name": "Payments \u0026 pricing", "resemble-ai-tts": 15, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 37, "edge": "inworld-tts", "inworld-tts": 68, "key": "maintenance", "name": "Maintenance \u0026 community", "resemble-ai-tts": 31, "weight": 7 }, { "by": 2, "edge": "resemble-ai-tts", "inworld-tts": 63, "key": "transparency", "name": "Transparency \u0026 trust", "resemble-ai-tts": 65, "weight": 7 } ], "summary": "Inworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema \u0026 documentation. Both do text-to-speech.", "tutorials": [], "verdicts": { "inworld-tts": "TTS-2 takes bracketed steering, and opt-in Reasoning writes a delivery direction from the text and up to 600 characters of context, returning it in the response. Per-character prices are public and the free plan needs no card. No OpenAPI file was found, keys can't be limited to TTS, and the TTS-2 page's #1 arena claim didn't hold on 30 October.", "resemble-ai-tts": "OpenAPI file in JSON and YAML, llms.txt and Markdown pages. Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts", "json": "https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.min.md" }, "markdown": "Inworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema \u0026 documentation. Both do text-to-speech.\n\n- Inworld Realtime TTS-2: grade C, 58.3/100, rank #687 of 1243. Markdown https://www.anchorterminal.com/tools/inworld-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/inworld-tts.json\n- Resemble AI Text-to-Speech API: grade D, 50.3/100, rank #941 of 1243. Markdown https://www.anchorterminal.com/tools/resemble-ai-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/resemble-ai-tts.json\n- Best text-to-speech APIs for AI agents: https://www.anchorterminal.com/best/text-to-speech/index.md\n- All 106 tts comparisons: https://www.anchorterminal.com/compare/text-to-speech/index.md\n\n## Which one, for what\n\n### Inworld Realtime TTS-2 (C)\n\nGood for: Agents that generate replies or stories at runtime and want delivery chosen from context without writing tags, and for per-message or pre-generated audio.\n\nAhead on:\n- Agent ergonomics, 68 against 46\n- Security \u0026 auth, 61 against 48\n- Payments \u0026 pricing, 40 against 15\n- Maintenance \u0026 community, 68 against 31\n\nWatch for: No OpenAPI or other machine-readable contract was found for the TTS API\n\n### Resemble AI Text-to-Speech API (D)\n\nGood for: Operators who already use Resemble for detection or watermarking and want one vendor for both.\n\nAhead on:\n- Reliability, 75 against 62\n- Schema \u0026 documentation, 75 against 60\n\nWatch for: Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published\n\n\n## Score by category\n\n| Category | Weight | Inworld Realtime TTS-2 | Resemble AI Text-to-Speech API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 62 | 75 | Resemble AI Text-to-Speech API +13 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 60 | 75 | Resemble AI Text-to-Speech API +15 |\n| Agent ergonomics | 13% (16.2 this run) | 68 | 46 | Inworld Realtime TTS-2 +22 |\n| Security \u0026 auth | 14% (17.5 this run) | 61 | 48 | Inworld Realtime TTS-2 +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 15 | Inworld Realtime TTS-2 +25 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 68 | 31 | Inworld Realtime TTS-2 +37 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 65 | Resemble AI Text-to-Speech API +2 |\n| Negative events | ≤15 | -2 | -3 | |\n| **Total** | | **58.3 · C** | **50.3 · D** | |\n\n## Facts side by side\n\n| Fact | Inworld Realtime TTS-2 | Resemble AI Text-to-Speech API |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Inworld AI | Resemble AI |\n| Hosted endpoint | `https://api.inworld.ai` | `https://app.resemble.ai/api/v2` |\n| Transports | HTTP, websocket | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| Price for text-to-speech | $12.50 per 1M characters | $0.03 per minute of audio |\n| x402 | no | no |\n| Licence | Proprietary service under Inworld's Terms of Service. The Node.js SDK `@inworld/tts` and the CLI `@inworld/cli` are MIT on npm | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-28 | 2026-06-30 |\n| Terms last updated | 2025-06-11 | 2026-08-14 |\n| Privacy policy last updated | 2026-01-18 | 2026-08-14 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 3.6k npm/wk | 15 stars, 8.1k npm/wk |\n| Agent reviews | none | 2/5 (2) |\n\n## Verdicts\n\n**Inworld Realtime TTS-2.** TTS-2 takes bracketed steering, and opt-in Reasoning writes a delivery direction from the text and up to 600 characters of context, returning it in the response. Per-character prices are public and the free plan needs no card. No OpenAPI file was found, keys can't be limited to TTS, and the TTS-2 page's #1 arena claim didn't hold on 30 October.\n\n**Resemble AI Text-to-Speech API.** OpenAPI file in JSON and YAML, llms.txt and Markdown pages. Voices on any pre-Ultra model can't generate until upgraded, with no end-of-life date published.\n\n## Before you call either\n\n### Inworld Realtime TTS-2\n\n1. Send the copied Base64 credential as-is in `Authorization: Basic`. Don't encode it again.\n2. Set `modelId` explicitly, because SDK defaults may name deprecated models.\n3. Keep text under 2,000 UTF-16 units on `/tts/v1/voice` and 4,000 on `voice:stream`, or use an async job.\n4. Turn on Reasoning with `synthesisContext.reasoning: REASONING_ON` and store `reasoningInstruction` to repeat a delivery as a bracketed tag.\n5. On 429 or error code 8, back off exponentially with jitter. No Retry-After header is documented.\n\n### Resemble AI Text-to-Speech API\n\n1. Check the voice's model before synthesis, since voices on pre-Ultra models fail until upgraded.\n2. Keep each synchronous request under 2,000 characters.\n3. Decode `audio_content` from base64 on `/synthesize`, or call `/stream` for raw WAV chunks.\n4. Send `Authorization: Bearer`, since some doc examples leave out the prefix.\n5. Log the request ID with every failure, since the error body has no code.\n\n## Questions\n\n### Which is better for AI agents, Inworld Realtime TTS-2 or Resemble AI Text-to-Speech API?\n\nInworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema \u0026 documentation.\n\n### Do Inworld Realtime TTS-2 and Resemble AI Text-to-Speech API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Inworld Realtime TTS-2 and Resemble AI Text-to-Speech API without installing anything?\n\nYes. Inworld Realtime TTS-2 has a hosted endpoint at https://api.inworld.ai and Resemble AI Text-to-Speech API at https://app.resemble.ai/api/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.json, and with the fewest tokens: https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"inworld-tts\", \"b\": \"resemble-ai-tts\"}`. From a terminal: `anchor compare inworld-tts resemble-ai-tts`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/inworld-tts.json and https://www.anchorterminal.com/api/v1/tools/resemble-ai-tts.json\n\n## Other comparisons with Inworld Realtime TTS-2 or Resemble AI Text-to-Speech API\n\n- [Amazon Polly vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/amazon-polly-vs-inworld-tts.md)\n- [Amazon Polly vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/amazon-polly-vs-resemble-ai-tts.md)\n- [Azure AI Speech text-to-speech vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-inworld-tts.md)\n- [Azure AI Speech text-to-speech vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-resemble-ai-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/cartesia-tts-vs-inworld-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/cartesia-tts-vs-resemble-ai-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-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- [ElevenLabs Text to Speech API + MCP vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-inworld-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- [Fish Audio TTS API vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/fish-audio-tts-vs-inworld-tts.md)\n- [Fish Audio TTS API vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts.md)\n- [HeyGen Voice vs Inworld Realtime TTS-2](https://www.anchorterminal.com/compare/heygen-voice-vs-inworld-tts.md)\n- [HeyGen Voice vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/heygen-voice-vs-resemble-ai-tts.md)\n- [Inworld Realtime TTS-2 vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/inworld-tts-vs-murf-tts.md)\n- [Inworld Realtime TTS-2 vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/inworld-tts-vs-playht-tts.md)\n- [Inworld Realtime TTS-2 vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/inworld-tts-vs-rime-tts.md)\n- [Inworld Realtime TTS-2 vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/inworld-tts-vs-soniox-tts.md)\n- [Murf TTS API + MCP vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/murf-tts-vs-resemble-ai-tts.md)\n- [PlayHT Text-to-Speech API vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/playht-tts-vs-resemble-ai-tts.md)\n- [Resemble AI Text-to-Speech API vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/resemble-ai-tts-vs-rime-tts.md)\n- [Resemble AI Text-to-Speech API vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-31", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Inworld Realtime TTS-2 vs Resemble AI Text-to-Speech API", "url": "" } ], "description": "Inworld Realtime TTS-2 scores 58.3 (C) to Resemble AI Text-to-Speech's 50.3 (D) for text-to-speech. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Inworld Realtime TTS-2 C 58.3", "Resemble AI Text-to-Speech API D 50.3", "scores" ], "h1": "Inworld Realtime TTS-2 vs Resemble AI Text-to-Speech API", "image": "https://www.anchorterminal.com/assets/og/compare-inworld-tts-vs-resemble-ai-tts.png", "path": "/compare/inworld-tts-vs-resemble-ai-tts", "published": "2026-10-01", "section": "tools", "title": "Inworld Realtime TTS-2 vs Resemble AI Text-to-Speech (2026)", "toc": null, "updated": "2026-10-31", "url": "https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts" }, "tokens": { "markdown": 2600, "slim": 730 }, "version": 1 }