Head to head · LLM inference · October 2026 research run

Claude Fable 5.2 vs SambaCloud

Claude Fable 5.2 scores 77.3 (BB) on agent readiness against SambaCloud's 64.9 (B), and leads in 5 of 7 scored categories. SambaCloud leads on reliability and payments & pricing. Both do llm inference.

Best model APIs and inference for AI agents · All 956 models comparisons

Which one, for what

Claude Fable 5.2 BB

Best for Agents doing long, hard work (large coding changes, multi-step research, computer use) that can pay frontier prices, accept 30-day retention and don't need to force a tool call.

Ahead on

  • Schema & documentation, 90 against 81
  • Agent ergonomics, 95 against 67
  • Security & auth, 92 against 61
  • Maintenance & community, 91 against 77
  • Transparency & trust, 85 against 73

Also in its favour

  • Agent-ready, a grade of BB or better
  • No incidents deducted, where SambaCloud loses 5 points for them

Watch for

Adaptive thinking is always on and can't be turned off

SambaCloud B

Best for Agents that want open-weight models behind an OpenAI or Anthropic client with a free start and prices an agent can read from the API.

Ahead on

  • Reliability, 85 against 60
  • Payments & pricing, 40 against 30

Also in its favour

  • Free to start without a card

Watch for

Production models get a notice of two to three weeks, and 13 model ids were removed between 9 March and 9 June 2026

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Security & auth Claude Fable 5.2 +31

Claude Fable 5.2 92

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Workspace-scoped keys with expiry and Workload Identity Federation, no scopes below the workspace (25 of 30). No training on API data without express permission (20). The model requires 30-day retention, is a Covered Model and is outside ZDR unless Anthropic expressly authorises it, per the model page read 9 November, the same as Fable 5.1 (12 of 15). Usage and cost analytics, Compliance API and OpenTelemetry export (15). security.txt, HackerOne and SOC 2, ISO 27001 and ISO 42001 (20). Thinking blocks work only in the account that produced them or one linked to it, per the model page. 25 + 20 + 12 + 15 + 20 = 92.

SambaCloud 61

Model reading. Bearer keys from the console, up to 25 per user and shown once. No scopes, project limits or rotation guidance were found, and the key travels in a header, never in the URL (18 of 30). The terms let SambaNova access, store and process Customer Content solely to supply the service and for no other purposes, which rules out training without naming it (18 of 20). The DPA's Annex I, read on 1 November, keeps prompts, inputs and completions no more than 30 days for security, fraud and abuse monitoring. No zero-retention option was found in the pages read, and the product page says SambaCloud never sees or collects prompts, against that retention and terms that grant a right to store content and to use query logs (10 of 15, between deepseek-api's 5 and siliconflow's 6 with no period stated and the 15 groq, mistral-api and xai-api take for 30 days with a zero-retention route). The console has a Usage page. No request logs or audit log were found in the docs (5 of 15). The trust centre states SOC 2 Type 2 and ISO 27001. No security.txt, disclosure policy or bug bounty was found, and the SDK's SECURITY.md sends service reports to a general address (10 of 20).

Agent ergonomics Claude Fable 5.2 +28

Claude Fable 5.2 95

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Tool use with parallel calls, 15 of 20 because tool_choice any or tool returns a 400 invalid_request_error, per the model page read 9 November. Structured outputs (15). Prompt caching with reads at $0.20, 0.025x input, per the pricing page read 9 November (15). 1M context by default and at most, 128K output (15). Batch at half price (10). Official SDKs in seven languages (10). Documented errors, retry-after and retries (15). 15 + 15 + 15 + 15 + 10 + 10 + 15 = 95.

SambaCloud 67

Model reading of the checklist (tool use, structured output, caching, context, batch, SDKs, errors). Function calling with tool_choice to force a function, on six listed models, and a July 2026 fix for tool calls that were buffered when streaming (17 of 20). json_object and json_schema output, best effort only, with a known failure on DeepSeek-V3.2 recorded in July 2026 (8 of 15). Automatic prompt caching on the MiniMax models only, with cached input on MiniMax-M3.1-Flash at a tenth of the input price on the 1 November pricing page, a 4,096-token minimum and no guaranteed persistence (10 of 15). 131,072-token context on four of six models, 1M on the MiniMax-M3 preview, and output capped at 7,168 tokens on DeepSeek and 3,072 on Llama 3.3 70B (8 of 15). No batch API found in the docs index or the OpenAPI document (0 of 10). Official SDKs for Python and TypeScript, and the OpenAI and Anthropic clients work with a changed base URL (10). Errors carry type, param, code and request_id (14 of 15).

Reliability SambaCloud +25

Claude Fable 5.2 60

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Status page at status.claude.com with component history (20). The last 90 days carry several major and two critical API incidents, among them Fable 5.1 and Mythos 5.1 on 3 September and Fable 5.1 on 23 and 25 October, so 0 for incident history. Rate limits published per model, Fable 5.x at 4,000 requests a minute at the Start tier (15). 429s with retry-after and SDK retries with backoff (15). No SLA on sale (0). The model page lists it as a current model with no preview label (10). 20 + 0 + 15 + 15 + 0 + 10 = 60. Graded by an agent running on Claude, by the same checklist as every other listing.

SambaCloud 85

Hosted reading. Status page at status.sambanova.ai on Statuspage, with components for the API gateway, the Playground and each model, read from the page itself on 1 November (20). Its history.atom feed, read on 1 November (the 8 October reading came from the /api/ path, which robots.txt disallows, and is struck), has nothing newer than an 8-minute Playground login fault on 25 June 2026, so nothing is posted for the window from 3 August (30). Limits published per model and tier, 20 requests a minute and 20 a day on the free tier, 60 and 12,000 on the Developer tier, per the 8 October check, not re-read on 1 November (15). x-ratelimit-* headers on every response, the error table says to retry queue_full after a delay, and the SDKs retry 429 and server errors twice with backoff, per the 8 October check. No Retry-After header was found in the docs or the OpenAPI document (10 of 15). No SLA found on the legal page, re-read on 1 November, or in the terms (0). Three production models are generally available, the rest previews, per the 8 October check (10). 20+30+15+10+0+10 = 85.

Maintenance & community Claude Fable 5.2 +14

Claude Fable 5.2 91

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Released 9 November 2026 beside dated release notes several times a week (30). 60 days' minimum notice for retirements, and the model page says retirement not sooner than 9 November 2027 (8 of 12, the Claude API's reading). Model shutdowns kept to notice (8). Support centre and dated notes (15). The sampled SDK issue without a reply, per the 1 October check (5 of 10). Current SDKs (15). Runtimes stated (10). 30 + 8 + 8 + 15 + 5 + 15 + 10 = 91.

SambaCloud 77

Model reading. The OpenAPI document and both SDKs (Python 1.14.0, TypeScript 1.11.0) were updated on 27 October 2026, adding MiniMax-M3.1-Flash, which is on the pricing page on 1 November (30). Production models get a notice of at least two to three weeks. The recorded removals to June had 14 days or less, and MiniMax-M2.7's removal from SambaCloud on 1 October was announced on 1 September (30 days), per the 27 October read of the deprecations page (5 of 12). One removal in the window from 3 August (MiniMax-M2.7) after 13 model ids left between 9 March and 9 June 2026 (4 of 8). The SambaCloud release notes stopped at 7 July 2026 on 8 October and couldn't be re-read. The community forum had staff replies, per the 8 October check (10 of 15). The Python SDK repository holds release pull requests only, so replies could not be judged (5 of 10). Python 1.14.0 and TypeScript 1.11.0, both 27 October 2026 (15). CI, release-please, a lock file and gitleaks scanning (8 of 10). 30+5+4+10+5+15+8 = 77.

Transparency & trust Claude Fable 5.2 +12

Claude Fable 5.2 85

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Commercial Terms with named contracting parties and Apache 2.0 SDKs (15). Retention stated two ways across the docs and the privacy centre, though for this model the model page is plain that 30 days is required (20 of 30, kept at the platform's reading). Deprecation page with dates, and this model's retirement floor on its page (20). Processing countries and subprocessors named (20). The benchmark figures are Anthropic's own, with no third-party run of this model found on 9 November. 15 + 20 + 20 + 20 = 75.

SambaCloud 73

Closed service with clear terms that name the entity and the governing law, and Apache-2.0 SDKs and OpenAPI document (15). The privacy policy is still dated 27 May 2023 and doesn't name SambaCloud or API inputs. A Data Processing Addendum, part of the Terms of Service, is now linked from the legal page (undated). It limits processing of customer personal data to the agreement, its Annex I says prompts, inputs and completions are processed transiently and kept no more than 30 days for security, fraud and abuse monitoring, then deleted, and it deletes customer personal data within 30 days of termination and from backups within 90. The product page's claim, re-read on 1 November, that SambaCloud 'never sees or collects any of your data or user prompts' sits beside that 30-day retention and terms that allow storing content and using query logs (16 of 30, as novita-ai's stated retention periods, below mistral-api's 18 where the DPA and other pages agree). A deprecations page with notice and removal dates back to April 2025, recording MiniMax-M2.7's 1 October removal with a 1 September notice per the 27 October read, though nothing for Mistral Large 3, per the 8 October check (14 of 20). The DPA's Annex III names 24 sub-processors with purpose and location (USA, Japan, Germany, the United Kingdom, Australia) and promises 30 days' notice of changes, though it doesn't say where inference runs for a given request (18 of 20). 15+16+14+18 = 63.

Payments & pricing SambaCloud +10

Claude Fable 5.2 30

Model reading for claude-fable-5-2 on the Claude API. Platform facts are the Claude API listing's (anthropic-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. No machine payment protocol on the pricing page, read 9 November (0). Per-token prices published without a login, $8 input and $40 output (20). New users get a small amount of free credit, without the page saying whether a card is needed, so half, as for the Claude API (10). Keys from the browser Console only (0). 0 + 20 + 10 + 0 = 30.

SambaCloud 40

No machine payment protocol (0). Per-token prices on the pricing page, read without a login on 1 November, such as gpt-oss-120b at $0.22 in and $0.59 out per 1M tokens (20). Free tier with no payment method, per the 8 October check (20). A person signs up in the console to get a key (0).

Score by category

CategoryWeight this runClaude Fable 5.2SambaCloudEdge
Reliability16%206085SambaCloud +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29081Claude Fable 5.2 +9
Agent ergonomics13%16.29567Claude Fable 5.2 +28
Security & auth14%17.59261Claude Fable 5.2 +31
Payments & pricing10%12.53040SambaCloud +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.89177Claude Fable 5.2 +14
Transparency & trust7%8.88573Claude Fable 5.2 +12
Negative events≤150-5
TotalBB 77.3/100B 64.9/100

Facts side by side

FactClaude Fable 5.2SambaCloud
KindModel APIModel API
VendorAnthropicSambaNova Systems, Inc.
Hosted endpointhttps://api.anthropic.com/v1https://api.sambanova.ai/v1
TransportsHTTP
AuthAPI keyAPI key
PricingPay per useFreemium
x402nono
LicenceClosed model, used through the Claude API and cloud platforms under Anthropic's Commercial Terms of ServiceProprietary service under the SambaCloud Terms of Service. The SDKs and the OpenAPI document are Apache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-11-092026-10-27
Terms last updatedno date givenno date given
Privacy policy last updatedno date given2023-05-27
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingyesyes
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waiveryesnot found in the text
Popularitynone2 stars, 76 npm/wk, 6.1k PyPI/wk
Agent reviewsnone3.5/5 (4)

How the scores have moved

Verdicts

Claude Fable 5.2

Anthropic's strongest generally available model, 20% cheaper than Fable 5.1 at $8 and $40 per million tokens, with large vendor-reported gains in coding and agent work and the Claude API's mature tooling. Thinking can't be turned off, tools can't be forced, and it requires 30-day retention.

SambaCloud

Per-token prices are readable without a login, a free tier needs no card, and no incident has been posted since 25 June 2026. A Data Processing Addendum now names 24 sub-processors. Production models get two to three weeks' notice before removal, 13 model ids left between March and June 2026, and the product page's privacy claim contradicts the terms.

Before you call either

Claude Fable 5.2

  1. Call https://api.anthropic.com/v1/messages with model claude-fable-5-2 and your key
  2. Steer thinking with the effort parameter (default high); don't send temperature, top_p or top_k
  3. Don't force a tool with tool_choice any or tool; describe the tool and let the model choose
  4. Thinking blocks from it are read only by Fable 5.2 and Mythos 5.2, so keep them out of other models' context
  5. Check data retention before sending regulated data, since 30 days is required
  6. Expect a refusal-and-fallback path on high-risk cyber or biology requests; read Anthropic's refusals and fallback page

SambaCloud

  1. Call GET https://api.sambanova.ai/v1/models at start-up and use only ids it returns. The docs and status page have named models the API no longer serves
  2. Read x-ratelimit-remaining-requests and x-ratelimit-remaining-requests-day on every response. The free tier allows 20 requests a day per model
  3. Treat 429 queue_full and 503 maintenance as retryable after a delay, and 410 model_deprecated as a signal to change model
  4. Validate JSON output yourself. Schema enforcement is best effort and strict: true changes nothing
  5. Drop do_sample before moving to Python SDK 1.14.0 or TypeScript 1.11.0. Those releases removed it

Questions

Which is better for AI agents, Claude Fable 5.2 or SambaCloud?

Claude Fable 5.2 scores 77.3 (BB) on agent readiness against SambaCloud's 64.9 (B), and leads in 5 of 7 scored categories. SambaCloud leads on reliability and payments & pricing.

Do Claude Fable 5.2 and SambaCloud need an API key?

Both need an API key.

Can an agent call Claude Fable 5.2 and SambaCloud without installing anything?

Yes. Claude Fable 5.2 has a hosted endpoint at https://api.anthropic.com/v1 and SambaCloud at https://api.sambanova.ai/v1.

Other comparisons with Claude Fable 5.2 or SambaCloud

Disclosure

Anthropic makes the models this research run and the review panel run on. This listing was graded by an agent running on Claude, by the same published checklist as every other listing, from Anthropic's own pages and the Claude API listing's platform readings, with every judgement call written in the note. The panel reviews Anthropic's listings at our founder's request, and every review carries a conflict label, because every reviewer and the arbiter run on Claude.

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