# Gradium Voice Cloning and Voice Design vs Resemble AI Voice Cloning API (slim)

> Gradium Voice Cloning and Voice Design scores 60.8 (C) to Resemble AI Voice Cloning's 52.5 (D) for voice cloning. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-voice-cloning.md (~5,000 tokens) · this version ~2,580 tokens · JSON https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-voice-cloning.json · canonical https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-voice-cloning
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Gradium Voice Cloning and Voice Design scores 60.8 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 4 of 7 scored categories. Resemble AI Voice Cloning API leads on security & auth and transparency & trust. Both do voice cloning.

- Gradium Voice Cloning and Voice Design: C 60.8, rank #640 of 1510 · https://www.anchorterminal.com/tools/gradium-voice-cloning.min.md
- Resemble AI Voice Cloning API: D 52.5, rank #985 of 1510 · https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.min.md
- Gradium Voice Cloning and Voice Design, good for Builders on Gradium's TTS who want instant clones and designed voices in five European languages with EU residency. Ahead on Payments & pricing, 30 against 0; Maintenance & community, 70 against 30. Also Free to start without a card; No incidents deducted, where Resemble AI Voice Cloning API loses 3 points for them.
- Resemble AI Voice Cloning API, good for Teams already paying for Resemble's detection and watermarking who want clones in the same account. Ahead on Security & auth, 54 against 48; Transparency & trust, 75 against 63.

| Category | Gradium Voice Cloning and Voice Design | Resemble AI Voice Cloning API |
| --- | --- | --- |
| Reliability (16%) | 63 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 81 |
| Agent ergonomics (13%) | 67 | 66 |
| Security & auth (14%) | 48 | 54 |
| Payments & pricing (10%) | 30 | 0 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 30 |
| Transparency & trust (7%) | 63 | 75 |

| Fact (where they differ) | Gradium Voice Cloning and Voice Design | Resemble AI Voice Cloning API |
| --- | --- | --- |
| Vendor | Gradium SAS | Resemble AI |
| Hosted endpoint | `https://api.gradium.ai/api/voices/` | `https://app.resemble.ai/api/v2` |
| Transports | HTTP, websocket | HTTP |
| Pricing | Freemium | Paid |
| Licence | Proprietary service under Gradium's Terms of Service (version of 19 October 2026). The `gradium` Python SDK is on PyPI | none |
| Last release | 2026-11-06 | 2026-06-30 |
| Terms last updated | no date given | 2026-08-14 |
| Privacy policy last updated | no date given | 2026-08-14 |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | none | 15 stars, 8.1k npm/wk |
| Agent reviews | none | 2.5/5 (2) |

Why the edge:
- Maintenance & community, Gradium Voice Cloning and Voice Design +40: Gradium Voice Cloning and Voice Design 70 (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.); Resemble AI Voice Cloning API 30 (Newest changelog entry 2026-06-30 per the 2 October check, not re-read on 4 November (terms), 127 days old (10 of 30). No dated entries in the last 90 days that we could read (0). Public changelog, no answering support channel confirmed (5 of 15). The Node SDK clone on 4 November still ends at 754a91e (6 April 2026, 3.5.3, zero-retention mode); Python 1.9.0 of 6 April per PyPI on 2 October, not re-read. Neither has a release since the June model changes (12 of 15). The Node repository has Jest tests but no CI workflow and no release tags (3 of 10).)
- Payments & pricing, Gradium Voice Cloning and Voice Design +30: Gradium Voice Cloning and Voice Design 30 (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.); Resemble AI Voice Cloning API 0 (No x402, MPP or L402 (0). The per-second speech and per-slot prices were read on 30 September from app.resemble.ai/billing/api/v1/plans, a billing data endpoint this run doesn't read, so that reading is struck, and the pricing pages can't be re-read under the terms, so no per-unit price for the API stands today (0). The changelog's $2 for later clones is the Flex web app's, not the API's. No API cloning below Business per the 2 October check, and the free first clone in the Flex web app captures a card for later clones (0). Signup is a human browser flow (0).)
- Transparency & trust, Resemble AI Voice Cloning API +12: Gradium Voice Cloning and Voice Design 63 (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.); Resemble AI Voice Cloning API 75 (Closed service with clear terms (15 of 30). The privacy policy of 14 August 2026 states no training on customer voice data, retention while the account is active plus 30 days, no retention of synthesis text or audio, and points to a DPA and a named subprocessor list. That agrees with the terms, which have Resemble destroy voice models on request after termination (25 of 30). The changelog's 29 June 2026 entry says Resemble 'began deprecating all older voice models', with no notice period. The model versions page now lists seven end-of-life TTS models, Chatterbox and Chatterbox-Turbo among them, and says voices still on them can no longer generate audio until upgraded to Resemble Ultra, but gives no dates or notice policy (10 of 20). Subprocessors named at trust.resemble.ai/subprocessors, and hosting stated as the United States on Google Cloud us-east4, Render in Oregon and Cerebrium (20 of 20). Privacy, subprocessor and model-version pages per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means); the terms of 14 August 2026 re-read.)
- Security & auth, Resemble AI Voice Cloning API +6: Gradium Voice Cloning and Voice Design 48 (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.); Resemble AI Voice Cloning API 54 (Graded for voice cloning, 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, since the API returns audio and IDs rather than third-party text. Plain Bearer API keys, no scopes found (20 of 30). The terms say Resemble may require verbal consent from the person cloned. The API reference has no consent field, though the Node SDK still sends an optional `consent` value added in 2023. Watermarking and deepfake detection sit in the same account (4 of 20). The privacy policy of 14 August 2026 says customer voice data isn't used to train general-purpose models or for research, recordings and voice models are kept while the account is active plus a 30-day grace period, and synthesis text and audio aren't kept after delivery (12 of 15). Clone slots and usage readable through the Billing API, no per-call log found (8 of 15). The Secureframe trust centre lists ISO 27001:2022 as certified, an annual third-party penetration test, and SOC 2 Type 2 still in its observation period on 2 October, two days after the date it gave for the report. No security.txt, disclosure policy or bug bounty found (10 of 20). The terms re-read on 4 November (last updated 14 August 2026) still say Resemble may require verbal consent captured in a form it specifies. OSV lists no records for @resemble/node or resemble. The rest per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means).)