# Gradium Voice Cloning and Voice Design vs Murf Voice Cloning API (slim)

> Gradium Voice Cloning and Voice Design scores 60.8 (C) to Murf Voice Cloning's 55.9 (C) for voice cloning. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-murf-voice-cloning.md (~4,750 tokens) · this version ~2,430 tokens · JSON https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-murf-voice-cloning.json · canonical https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-murf-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 Murf Voice Cloning API's 55.9 (C), and leads in 4 of 7 scored categories. Murf Voice Cloning API leads on reliability. Both do voice cloning.

- Gradium Voice Cloning and Voice Design: C 60.8, rank #637 of 1486 · https://www.anchorterminal.com/tools/gradium-voice-cloning.min.md
- Murf Voice Cloning API: C 55.9, rank #846 of 1486 · https://www.anchorterminal.com/tools/murf-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 Security & auth, 48 against 35; Payments & pricing, 30 against 0; Maintenance & community, 70 against 40. Also Free to start without a card.
- Murf Voice Cloning API, good for Enterprises already on Murf Falcon 2 that want a cloned voice in the same contract. Ahead on Reliability, 83 against 63.

| Category | Gradium Voice Cloning and Voice Design | Murf Voice Cloning API |
| --- | --- | --- |
| Reliability (16%) | 63 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 84 |
| Agent ergonomics (13%) | 67 | 63 |
| Security & auth (14%) | 48 | 35 |
| Payments & pricing (10%) | 30 | 0 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 40 |
| Transparency & trust (7%) | 63 | 66 |

| Fact (where they differ) | Gradium Voice Cloning and Voice Design | Murf Voice Cloning API |
| --- | --- | --- |
| Vendor | Gradium SAS | Murf |
| Hosted endpoint | `https://api.gradium.ai/api/voices/` | `https://api.murf.ai/v1` |
| Transports | HTTP, websocket | HTTP |
| Pricing | Freemium | Paid |
| Price for voice cloning | not published | $10 per 1M characters |
| Licence | Proprietary service under Gradium's Terms of Service (version of 19 October 2026). The `gradium` Python SDK is on PyPI | MIT (SDK) |
| Last release | 2026-11-06 | 2026-06-16 |
| 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 |
| Popularity | none | 108 stars, 669 PyPI/wk |
| Agent reviews | none | 2/5 (2) |

Why the edge:
- 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.); Murf Voice Cloning API 0 (Per the 1 October check, not re-read on 5 November, since Murf's terms bar bots and automated access to its site. No x402, MPP or L402 (0). Cloning is Enterprise-only and priced by contract, which counts as contact sales even though Falcon 2 speech has a public list rate (0). No free cloning (0). A person has to talk to sales before the endpoints work (0).)
- Maintenance & community, Gradium Voice Cloning and Voice Design +30: 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.); Murf Voice Cloning API 40 (Read as a model, on the lines Murf's text-to-speech listing and the other hosted speech models use (recency 30, dated releases 10, deprecation notice 10, support 15, issues 10, SDKs 15, health 10). The 1 October check used the tool lines. Murf's site wasn't re-read on 5 November, since its terms bar bots and automated access. The newest dated change this listing has read is the 20 July 2026 changelog entry, the Gen2 streaming deprecation notice, per the 1 October check, 108 days ago (10). No release touching cloning in the 90 days from 7 August that we could read. `murf-mcp` 0.1.14 (20 August) adds setup for a docs server and has no cloning tool (0). The Gen2 streaming notice gave 27 days, with no stated notice period (5 of 10). Public changelog and a Discord channel named in the docs (10 of 15). SDK issues weren't read, since GitHub's pages answer 403 in this session (3 of 10). The Python SDK is still 2.3.0 of 5 March 2026 by its tags. It streams speech from a clone but has no cloning methods (5 of 15). CI runs mypy and pytest on every push, Python 3.8 and later (7 of 10). 10+0+5+10+3+5+7 = 40.)
- Reliability, Murf Voice Cloning API +20: Gradium Voice Cloning and Voice Design 63 (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.); Murf Voice Cloning API 83 (Atlassian status page at murf.statuspage.io, titled Murf Status, with API and Studio components and incident history back to February 2024, read on 5 November 2026 (20). The 1 October check missed it. Its four posted incidents end on 22 September 2025, so the 90 days from 7 August are clean (30). Concurrency published, 5 Falcon 2 requests on US-East and 2 on other endpoints for Free and Pay as You Go, custom on Enterprise, per the 1 October check, not re-read on 5 November (15). The cloning docs don't mention 429 or backoff. The official Python SDK's README documents automatic retries with exponential backoff on 408, 429 and 5xx, which cover the speech calls a clone is used with but not the cloning endpoints (8). No idempotency key for clone creation (0). No SLA published (0). Instant cloning is generally available to Enterprise workspaces, per the 1 October check (10). 20+30+15+8+0+10 = 83.)
- Security & auth, Gradium Voice Cloning and Voice Design +13: 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.); Murf Voice Cloning API 35 (Per the 1 October check, not re-read on 5 November, since Murf's terms bar bots and automated access to its site. 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. `api-key` header plus a token endpoint for short-lived client tokens, no scopes found (25 of 30). No consent step, only a written rule to clone voices you own or have documented consent for, and no watermark found (0 of 20). Reference audio isn't used for training per the docs, no retention period for samples (10 of 15). No per-call log or usage API found (0 of 15). No security.txt, bug bounty, SOC 2 or trust centre found (0 of 20).)