# Gradium Voice Cloning and Voice Design > Gradium's voice API creates a custom voice from an uploaded audio sample of about 10 seconds, or designs one from a written description, for its text-to-speech models in English, French, German, Spanish and Portuguese. - Canonical: https://www.anchorterminal.com/tools/gradium-voice-cloning - Pricing: https://www.anchorterminal.com/tools/gradium-voice-cloning#pricing - Reviews: https://www.anchorterminal.com/tools/gradium-voice-cloning#reviews - Markdown: https://www.anchorterminal.com/tools/gradium-voice-cloning.md (~7,550 tokens) - Slim: https://www.anchorterminal.com/tools/gradium-voice-cloning.min.md (~1,780 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/tools/gradium-voice-cloning.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - DNS: dig +short TXT gradium-voice-cloning.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.. and .vs.. under the zone, and the same under grade.letme.dev) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-11-07 ## Overview **Grade C · 60.8/100 · rank #637 of 1486 · #6 in Voice cloning & custom voices · not agent-ready · confidence medium** ## Assessment A public OpenAPI file, dated release notes and a free plan with five custom voices and no card make Gradium's clone and design endpoints easy to adopt. The Terms let Gradium train on customer data, zero data retention excludes voice samples, and there's no consent field, rate-limit guidance or SLA. ## Facts | Field | Value | | --- | --- | | Vendor | Gradium SAS (https://gradium.ai) | | Kind | Model API | | Category | Voice cloning & custom voices (https://www.anchorterminal.com/categories/voice-cloning) | | Transport | HTTP, websocket | | Endpoint | `https://api.gradium.ai/api/voices/` | | Auth | API key · API key from Gradium Studio sent in the `x-api-key` header, after a browser signup. Keys belong to an organisation and can be revoked or expire. No scopes or read-only keys were found in the docs. | | Pricing | Freemium ($12 / mo) · Creating a clone uses no credits in the docs and counts against the custom-voice allowance, 5 on the free plan and 1,000 on paid plans. Speech costs 1 credit a character. Plans are free (45,000 credits a month), $12, $39, $312 and $1,480 a month, with commercial use from $12 (checked 2026-11-06). | | x402 | No · No x402, MPP or L402 in the docs, llms.txt, OpenAPI or pricing page (checked 2026-11-06). | | Licence | Proprietary service under Gradium's Terms of Service (version of 19 October 2026). The `gradium` Python SDK is on PyPI | | Packages | pypi: `gradium` | | Source | https://github.com/gradium-ai/gradium-py | | Docs | https://docs.gradium.ai/guides/voices/custom-voices | | llms.txt | https://docs.gradium.ai/llms.txt | | Last release | 2026-11-06 | | Surface listed | The voice endpoints of the Gradium API at api.gradium.ai (`POST /api/voices/` and the voice-generator routes), read from docs.gradium.ai, its OpenAPI file, the pricing, terms, privacy and press pages on gradium.ai and gradium.statuspage.io on 6 November 2026. No account was made and no call was sent | | Sample length | About 10 seconds recommended for an instant clone, with `start_s` to pick where sampling starts. Pro voice clones need 30 minutes or more and are on the M and L plans | | Endpoints | `POST /voices/` (multipart clone), `GET /voices/` with `skip`, `limit`, `locale`, `gender`, `use_case` and `include_catalog`, `GET`, `PUT` and `DELETE /voices/{voice_uid}`, plus `voice-generator/generate`, `embeddings`, `enhance` and `localize` | | Voice design | `POST /voice-generator/generate` returns 1 to 5 candidates from a 1 to 500 character description. Candidates are kept 30 days and one is saved with `POST /voices/from-embedding` | | Languages | `en`, `fr`, `de`, `es` and `pt`, required on the clone request and used as the source language for localisation | | Consent and verification | No consent or verification field in the API. The Terms make the client obtain any consent needed for a voice sample and bar impersonation without explicit authorisation. The API reference FAQ says explicit consent from the voice owner is required. No watermark found | | Custom voices per plan | Free 5, XS to L 1,000, Enterprise unlimited, shared by clones and designed voices. Pro voice clones 5 on M and 20 on L | | Concurrency | TTS sessions 2 (free), 5, 5, 10 and 15 by plan per the pricing page. The limits page says to ask support for exact limits | | Regions | EU and US API hosts (eu.api.gradium.ai, us.api.gradium.ai), with data residency from the XS plan | | Legal entity | Gradium, a société par actions simplifiée registered in Paris under 989 284 955, 151bis rue Saint-Honoré, 75001 Paris, per the Terms | | Capabilities | voice.clone, voice.design, speech.tts | | Tags | hosted, official, freemium, free-tier, no-card, closed-source, python, openapi, llms-txt, websocket, status-page, soc2, iso27001, data-residency, eu | | JSON | https://www.anchorterminal.com/api/v1/tools/gradium-voice-cloning.json | ## Score breakdown (methodology v0.7, October 2026 research run) Assessed 2026-11-06 from public evidence against the published checklist (https://www.anchorterminal.com/benchmark/#checklist). Confidence: medium. Performance and Task success pending (no score, not in the total); the total is Σ(score × weight) ÷ 80 over the 7 assessed categories. "This run" is each category's share of the 100 points. | Category | Weight | This run | Score (0–100) | Points | | --- | --- | --- | --- | --- | | Reliability | 16% | 20 | 63 | 12.6 | | Performance | 10% | pending | pending | n/a | | Schema & documentation | 13% | 16.2 | 83 | 13.5 | | Agent ergonomics | 13% | 16.2 | 67 | 10.9 | | Security & auth | 14% | 17.5 | 48 | 8.4 | | Payments & pricing | 10% | 12.5 | 30 | 3.8 | | Task success | 10% | pending | pending | n/a | | Maintenance & community | 7% | 8.8 | 70 | 6.1 | | Transparency & trust (editorial 52, provenance 74) | 7% | 8.8 | 63 | 5.5 | | Negative events | up to −15 | up to −15 | none recorded | 0 | | **Total** | | | | **60.8 → C** | ### Why each score - Reliability 63 (checked 2026-11-06): Graded on the hosted voice API with the hosted lines. Atlassian Statuspage at gradium.statuspage.io with five components, one of them Voice Cloning (20). History and the RSS feed, read on 6 November, show no incident in the 90 days from 8 August. The page has posted one real incident since May 2026 (a DNS issue on 15 June) beside a leftover example incident, so the quiet window is read as minor-only rather than clean, as for tldv (20). Concurrency is published per plan on the pricing page (2 to 15 TTS sessions), while the limits page says to ask support and no limit for voice creation was found (10 of 15). No 429, Retry-After or backoff guidance was found; the errors page says to open a new connection after an error, and voice creation takes a `timeout_s` (3 of 15). No SLA in the Terms or on the pricing page (0). Instant cloning carries no beta label (10). 20+20+10+3+0+10 = 63. - Performance: Pending. Latency is measured per call by our probes, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until the first probe window closes. - Schema & documentation 83 (checked 2026-11-06): Public OpenAPI 3.1 file at docs.gradium.ai/api-reference/openapi.json (25). llms.txt and Markdown pages (10). The guides say when to clone, design, enhance or localise a voice, and the custom-voice page explains the enhancement default and how to opt out (14 of 20). The clone body has `audio_file`, `name` and `language` required, a five-value language enum and typed defaults for `start_s`, `enhance` and `timeout_s` (14 of 15). curl and Python examples. The create call documents only 201 and 422, and the errors page covers synthesis, with plain-text 500 bodies (9 of 15). Routes carry no version, the OpenAPI file is 0.1.0, and release notes are dated per entry, newest 6 November 2026 (11 of 15). The API reference FAQ gives a 300-second session where the limits page says 3,000. 25+10+14+14+9+11 = 83. - Agent ergonomics 67 (checked 2026-11-06): Voice objects are compact metadata (20 of 25). `GET /voices/` takes `skip` and `limit` (default 100) and since 23 October filters by `locale`, `gender` and `use_case` (20). Validation errors are structured 422 bodies, while synthesis errors arrive as plain-text HTTP 500 with a numeric code to parse (12 of 20). No idempotency key. Saving a design candidate twice answers 409, and the clone call has none (5 of 20). Three required fields with sensible defaults, and one official SDK, in Python (10 of 15). 20+20+12+5+10 = 67. - Security & auth 48 (checked 2026-11-06): Graded for voice cloning as the other listings in this category, with consent and misuse controls in place of the read-only line and training and retention of voice data in place of the prompt-injection line. API keys per organisation in a header, revocable and able to expire, with no scopes found (20 of 30). No consent or verification field and no watermark. The Terms make the client obtain the consent of anyone whose voice is a sample and bar impersonation without explicit authorisation, and the API FAQ says explicit consent is required (6 of 20). The Terms grant Gradium a licence to use Client Data to improve its services and train its models, with no opt-out found, and zero data retention (paid plans) excludes voice samples, so samples are kept and may be used for training (2 of 15). Organisation roles and a member list, with no per-call audit log found (5 of 15). SOC 2 Type II and ISO 27001:2022 audited by A-LIGN, a trust centre and security@gradium.ai. No security.txt (404) and no bug bounty found (15 of 20). 20+6+2+5+15 = 48. - Payments & pricing 30 (checked 2026-11-06): No x402, MPP or L402 (0). Plan prices and credits are public, 1 credit a character for speech, with no dollar price per unit, as cartesia-voice-cloning is read. Creating a clone uses no credits in the docs (10). The free plan has 45,000 credits a month, 5 custom voices and Voice Design, and the site says no credit card is required. Commercial use starts on the $12 plan (20). Signup is a browser flow in Gradium Studio (0). 0+10+20+0 = 30. - Task success: Pending. Task success needs the category task suites run through each tool, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until then. A data provider's data-quality score is published on its listing now and becomes half of this category when it's scored. - Maintenance & community 70 (checked 2026-11-06): Read as a model, on the lines the other hosted cloning listings use (recency 30, dated releases 10, deprecation notice 10, support 15, SDKs 15, health 10). Release notes dated 6 November 2026 (data residency in Studio) and 3 November (30). Dated entries on 9, 12, 16, 20, 23 and 28 October, among them voice list filters and the enhancement default for clones on 23 October (10). `cfg_coef` was deprecated with requests still accepted, but the clone enhancement default changed on the day it was announced and no notice policy was found (5 of 10). Public release notes, support@gradium.ai and a Discord server, with no evidence read of how they answer (10 of 15). `gradium` on PyPI at 0.6.4 (4 September 2026), with no SDK in a second language (10 of 15). The SDK repository was not cloned (5 of 10). 30+10+5+10+10+5 = 70. - Transparency & trust 63 (checked 2026-11-06): Closed service with clear terms, version of 19 October 2026, naming Gradium SAS with its Paris registration (15 of 30). The Terms allow training on Client Data, zero data retention excludes voice samples, the privacy policy gives retention criteria without periods, and a DPA is published as an exhibit. The statements agree but give no retention period for samples (15 of 30). Deprecations appear in dated release notes, with no written notice policy (10 of 20). EU and US residency is documented and selectable from the XS plan. Sub-processors sit in the trust centre, not read (12 of 20). 15+15+10+12 = 52. Fix list, everything this grade says the listing lacks, the biggest gain first (18 items). What it covers is at https://www.anchorterminal.com/fixes/gradium-voice-cloning.md (JSON https://www.anchorterminal.com/fixes/gradium-voice-cloning.json). The whole list for a coding agent comes from `POST https://www.anchorterminal.com/api/v1/fix-list` with `{"listing": "gradium-voice-cloning", "plan": "read"}`, free while the beta runs ### What we couldn't check - unchecked: the trust centre at trust.gradium.ai for the sub-processor list and retention periods - unchecked: whether there's any opt-out from training on Client Data outside Enterprise agreements. None was found in the Terms or docs - unchecked: a rate limit for voice creation and design, and the maximum sample length - The API reference FAQ gives a 300-second session, while the limits page says 3,000 seconds - One request to gradium.statuspage.io/api/v2 was sent before its robots.txt (which disallows /api/) was read. Its result isn't used; history comes from /history and the RSS feed - One request went to pypi.org/pypi/gradium/json, a path PyPI's robots.txt disallows, before robots.txt was read. The release dates used here were re-read from the allowed feed at pypi.org/rss/project/gradium/releases.xml, which agrees, and the SDK repository link comes from gradium.ai's GitHub organisation link ### Sources - custom voices guide: (seen 2026-11-06) - OpenAPI 3.1 file: (seen 2026-11-06) - create voice reference and FAQ: (seen 2026-11-06) - limits: (seen 2026-11-06) - errors: (seen 2026-11-06) - zero data retention: (seen 2026-11-06) - security and compliance: (seen 2026-11-06) - release notes, October and November 2026: (seen 2026-11-06) - pricing: (seen 2026-11-06) - Terms of Service, 19 October 2026: (seen 2026-11-06) - privacy policy: (seen 2026-11-06) - status history: (seen 2026-11-06) - PyPI SDK releases: (seen 2026-11-06) - launch press release: (seen 2026-11-06) ## Score history Every move of a score since the listing was graded, newest first, with its cause. A score can't move without an entry here. JSON: https://www.anchorterminal.com/api/v1/tools/gradium-voice-cloning/history.json - 2026-11-06: graded 60.8 C (methodology 0.7) ## Who's behind it (provenance 74/100, checked 2026-11-06) | Check | Finding | Points | | --- | --- | --- | | Legal entity named | Gradium SAS | 20/20 | | Domain age | gradium.ai, registered 2025-03-04 (1 year) | 3/15 | | Endpoint on the vendor's domain | api.gradium.ai | 15/15 | | Terms of service | read, states 4 of the 7 things a reader expects, and has 1 clause that costs points | 5.4/10 | | Privacy policy | read, states 7 of the 8 things a reader expects | 9.3/10 | | Status page | gradium.statuspage.io | 10/10 | | Changelog | published | 10/10 | | security.txt | not found | 0/10 | | People named | 4 named with their role, none with a public profile | 7/10 | | Support route | a support address, help pages, a community | 5/5 | The Terms of Service, version of 19 October 2026, are with Gradium SAS, Paris trade register 989 284 955. They bar robots, spiders and scrapers on the services without written consent, recorded as a fact; robots.txt on gradium.ai allows ClaudeBot and anthropic-ai, and docs.gradium.ai sets `Content-Signal: ai-train=yes, search=yes, ai-input=yes`. gradium.statuspage.io is an Atlassian Statuspage with a Voice Cloning component. Its robots.txt disallows /api/, so history was read from /history and the RSS feed. gradium.ai/.well-known/security.txt returns 404. The security page names security@gradium.ai and a trust centre at trust.gradium.ai. RDAP gives gradium.ai a registration date of 4 March 2025. firstReleased is the public launch on 2 December 2025 per the press page. ### Terms and privacy, as read A reading by a fixed set of rules, each answered with the vendor's own sentence. Not legal advice. **Terms of service** (https://gradium.ai/terms-of-service), read 2026-11-06, gives no date, states 4 of the 7 things a reader expects. - To know. Says it may use customer content to train or improve models, and no opt-out was found (costs points). "Access, use, modify, copy, analyze any part of the Services, including Output and Voice Reproduction, or the Documentation to develop a competitive AI model, AI system, product, software or service." - Not found in the text. Gives the date it was last updated. - Names the governing law or courts. The law of France. - States a limit on its liability. Capped at the fees paid in the 6 months before the claim. - Says how changes to the terms are announced. Gives thirty days of notice before a change. - Not found in the text. Lists what users may not do. - Not found in the text. Refers to a service level or uptime commitment. **Privacy policy** (https://gradium.ai/privacy), read 2026-11-06, gives no date, states 7 of the 8 things a reader expects. - Not found in the text. Gives the date it was last updated. - Gives a privacy contact. dpo@gradium.ai. - Says where data is transferred or stored. Relies on standard contractual clauses and the Data Privacy Framework. ## Humans behind the project (researched 2026-11-06 from public pages, not part of the grade) ### Key people - Neil Zeghidour, Co-founder and CEO - Laurent Mazaré, Co-founder - Olivier Teboul, Co-founder - Alexandre Défossez, Co-founder - Note: Gradium's funding post of 8 July 2026 names Neil Zeghidour, Laurent Mazaré, Olivier Teboul and Alexandre Défossez as founders, the researchers behind Kyutai, and quotes Neil Zeghidour as Co-Founder and CEO. The other founders' present roles aren't stated on the pages read. No personal accounts are linked from Gradium's pages, so none are listed. Investors come from Gradium's launch press release of 2 December 2025 (a $70 million seed round led by FirstMark Capital and Eurazeo) and the 8 July 2026 post, which says a seed extension brought funding to $100 million and names NVIDIA among new investors without listing the others. Individuals named in the launch release (Eric Schmidt, Xavier Niel, Rodolphe Saadé) are angels named first-hand. No valuation is given in Gradium's July 2026 post or its December 2025 release, and a web search on 6 November 2026 found no stated valuation (Sifted's report of the extension sits behind a bot check and wasn't read), so valuation is left out. - Gradium (Gradium SAS): LinkedIn https://www.linkedin.com/company/gradium-ai/ X https://x.com/GradiumAI GitHub https://github.com/gradium-ai ### Ownership and investors - Raised: $100M in total, as of July 2026 (source https://gradium.ai/blog/gradium-100-million-funding-nvidia) - Backed by: FirstMark Capital, Eurazeo, DST Global, Eric Schmidt, Xavier Niel, Rodolphe Saadé, Korelya Capital, Amplify Partners, NVIDIA ### Getting support - Discord: https://discord.gg/T85yt8kD33 - Support email: support@gradium.ai - Help: https://docs.gradium.ai/ - Help: https://gradium.ai/pricing-faq - Sources: https://gradium.ai/blog/gradium-100-million-funding-nvidia, https://gradium.ai/press, https://gradium.ai/Gradium%20-%20press%20release%20EN%20final.pdf, https://gradium.ai/terms-of-service, https://docs.gradium.ai/guides/security.md ## Live (updated 2026-11-07 18:21 UTC) - Right now: up, HTTP 401, 113 ms, checked 2026-11-07 18:20 UTC (get on `https://api.gradium.ai/api/voices/`, asks for auth) - Uptime 24h 100.0% (200 probes) · 30 days 100.0% (200 probes) · p50 55 ms · p95 126 ms - Vendor status page: no problems reported, All Systems Operational - github `gradium-ai/gradium-py` v0.6.4, released 2026-09-04 - pypi `gradium` 0.6.4, released 2026-09-04 - security.txt: none - Watching changelog - Watching privacy - Watching terms - Always current: https://www.anchorterminal.com/api/v1/live/gradium-voice-cloning.json ## Probe metrics Not measured yet. Our benchmark probes haven't run, so there's no availability, latency or error rate from a run and Performance is pending. Live uptime, where we poll the endpoint, is under Live and doesn't change the score. ## Prices | Item | Price | Unit | Note | | --- | --- | --- | --- | | XS plan | $12 | per month (plan) | 225,000 credits, commercial use, 1,000 custom voices | | S plan | $39 | per month (plan) | 900,000 credits, zero data retention | | M plan | $312 | per month (plan) | 9 million credits, 5 pro voice clones | | L plan | $1480 | per month (plan) | 45 million credits, 20 pro voice clones | Across all listings: https://www.anchorterminal.com/prices/index.md ## Strengths - Public OpenAPI 3.1 file covering cloning, voice design, enhancement and localisation - Free plan with 45,000 credits a month, 5 custom voices and no card required - Voice Design returns 1 to 5 candidates from a description, kept 30 days until one is saved - SOC 2 Type II and ISO 27001:2022 audited by A-LIGN, with EU and US data residency - Release notes dated per entry, the newest on 6 November 2026 ## Weaknesses - The Terms grant Gradium a licence to train its models on Client Data, and zero data retention excludes voice samples - No consent or verification field in the clone API, and no watermark found - No 429, Retry-After or backoff guidance, and no SLA - Synthesis errors come back as plain-text HTTP 500 bodies to parse - Commercial use needs a paid plan, and only a Python SDK is published ## Before you call it (notes for agents) 1. Send `language` on every clone. It's required and must be one of en, fr, de, es or pt and match the recording 2. Clones are enhanced by default since 23 October 2026. Pass `enhance=false` to keep the raw voice, then check `enhance` on GET 3. Pass a clone as `voice_id` in TTS, not `voice` 4. On a non-2xx synthesis reply, parse the `error from server ` prefix; 1008 means a bad or revoked key 5. Check the custom-voice allowance first. The free plan holds 5 voices shared by clones and designs ## Connect Install: ```bash pip install gradium ``` First request: ```bash curl -X POST https://api.gradium.ai/api/voices/ \ -H "x-api-key: $GRADIUM_API_KEY" \ -F "audio_file=@my_voice_sample.wav" \ -F "name=My Custom Voice" \ -F "language=en" ``` ## Similar tools Ranked by shared capabilities, then score. Same-category tools with no shared capability key are listed last. | Tool | Grade | Score | Rank | Shared capabilities | x402 | Markdown | | --- | --- | --- | --- | --- | --- | --- | | ElevenLabs Voice Cloning and Voice Design API | BB | 76.8 | 40 | voice.clone, voice.design, speech.tts | no | https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md | | Inworld Instant Voice Cloning | C | 61.9 | 585 | voice.clone, voice.design, speech.tts | no | https://www.anchorterminal.com/tools/inworld-voice-cloning.md | | Fish Audio Voice Cloning API | C | 61.5 | 604 | voice.clone, voice.design, speech.tts | no | https://www.anchorterminal.com/tools/fish-audio-voice-cloning.md | | Ming-3.0-tts-0.5B | C | 59.3 | open-weight #71 | speech.tts, voice.clone, voice.design | no | https://www.anchorterminal.com/tools/ming-3-0-tts-0-5b.md | | Inworld Realtime TTS-2 | C | 58.3 | 752 | speech.tts, voice.clone, voice.design | no | https://www.anchorterminal.com/tools/inworld-tts.md | | MiniMax Voice Clone and Voice Design | C | 55.1 | 880 | voice.clone, voice.design, speech.tts | no | https://www.anchorterminal.com/tools/minimax-voice-cloning.md | ## Panel reviews (0) Reviewed by the Anchor panel (https://www.anchorterminal.com/reviewers/index.md): . Desk reviews, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. For a desk review, the outcome says whether the reviewer's questions could be answered from public material: success, partial or failure. How reviews work: https://www.anchorterminal.com/reviews/how-it-works.md ## Notable - Public OpenAPI 3.1 file covering voice creation, voice design candidates, enhancement, localisation and TTS (source: ) - Since 23 October 2026 new clones are enhanced by default, with `enhance=false` to opt out, per the release notes (source: ) - The Terms of Service (19 October 2026) grant Gradium a licence to use Client Data to improve its services and to train and develop its models, and make the client responsible for the consent of anyone whose voice is processed (source: ) - Zero data retention, on paid plans from S ($39 a month), does not cover voice samples uploaded for cloning or Voice Design prompts (source: ) - SOC 2 Type II attestation and ISO 27001:2022 certification, both audited by A-LIGN, per the security page (source: ) - The Terms bar any robot, spider or scraper on the services without written consent. gradium.ai's robots.txt allows ClaudeBot and anthropic-ai (source: ) - #6 of 14 in Best voice cloning and custom voice APIs for AI agents: https://www.anchorterminal.com/best/voice-cloning/index.md - All 133 cloning comparisons: https://www.anchorterminal.com/compare/voice-cloning/index.md ## Compare - [Cartesia Voice Cloning API + MCP vs Gradium Voice Cloning and Voice Design](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-gradium-voice-cloning.md): C 58.3 vs C 60.8 - [ElevenLabs Voice Cloning and Voice Design API vs Gradium Voice Cloning and Voice Design](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-gradium-voice-cloning.md): BB 76.8 vs C 60.8 - [Fish Audio Voice Cloning API vs Gradium Voice Cloning and Voice Design](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-gradium-voice-cloning.md): C 61.5 vs C 60.8 - [Gradium Voice Cloning and Voice Design vs Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-hume-voice-cloning.md): C 60.8 vs C 54.6 - [Gradium Voice Cloning and Voice Design vs Inworld Instant Voice Cloning](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-inworld-voice-cloning.md): C 60.8 vs C 61.9 - [Gradium Voice Cloning and Voice Design vs MiniMax Voice Clone and Voice Design](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-minimax-voice-cloning.md): C 60.8 vs C 55.1 - [Gradium Voice Cloning and Voice Design vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-murf-voice-cloning.md): C 60.8 vs C 55.9 - [Gradium Voice Cloning and Voice Design vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-playht-voice-cloning.md): C 60.8 vs F 4.1 - [Gradium Voice Cloning and Voice Design vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-voice-cloning.md): C 60.8 vs D 52.5 - [Gradium Voice Cloning and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone.md): C 60.8 vs C 58 - [Gradium Voice Cloning and Voice Design vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-soniox-voice-cloning.md): C 60.8 vs B 68.7 - [Gradium Voice Cloning and Voice Design vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-speechify-voice-cloning.md): C 60.8 vs BB 76.9 - [Gradium Voice Cloning and Voice Design vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-ultravox-voice-cloning.md): C 60.8 vs E 40.9 - [Gradium Voice Cloning and Voice Design vs VoiceStudio](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-voicestudio.md): C 60.8 vs D 50.4 ## Verify this listing For the vendor. The badge or a plain link to this page verifies the listing, from a page on gradium.ai or one of its subdomains, or the README at the root of github.com/gradium-ai/gradium-py. It shows the listing is the vendor's and that the vendor knows it's here, and it never changes a grade, rank or review. The vendor sends the page's address to `POST https://www.anchorterminal.com/api/v1/verify` as `{"slug": "gradium-voice-cloning", "url": "…"}`, or calls the `verify_listing` tool at https://www.anchorterminal.com/mcp. We fetch the page once, then again every week; two failed checks in a row and the verification lapses, and a later pass restores it. What we check: https://www.anchorterminal.com/builders/index.md#verify HTML badge: ```html Gradium Voice Cloning and Voice Design on Anchor Terminal ``` Markdown badge, for a README: ```markdown [![Gradium Voice Cloning and Voice Design on Anchor Terminal](https://www.anchorterminal.com/badges/gradium-voice-cloning.svg)](https://www.anchorterminal.com/tools/gradium-voice-cloning) ``` Plain link: ```html Gradium Voice Cloning and Voice Design on Anchor Terminal ``` ## Share this listing For the vendor. Sharing assets for social media, two PNGs of 1200 × 630 that say Gradium Voice Cloning and Voice Design is listed on Anchor Terminal, with the vendor's logo and this page's address and no grade or score. - Dark: https://www.anchorterminal.com/assets/share/gradium-voice-cloning-dark.png - Light: https://www.anchorterminal.com/assets/share/gradium-voice-cloning-light.png --- Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp