Claude Fable 5.2 vs Cloudflare AI Gateway

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.

Cloudflare AI Gateway 73

Router, read on the model lines (tool use, structured output, caching, context, batch, SDKs, errors). Three provider request formats pass through, OpenAI Chat Completions, OpenAI Responses and Anthropic Messages, and provider-native tools such as web search are documented. Tool behaviour depends on the routed model (15 of 20). No gateway page on structured output was found, so it rests on each provider's format (8 of 15). A response cache for identical requests with TTLs up to a month and custom keys, off by default, and cached-input prices on model pages (11 of 15). The catalogue lists models with a context of about one million tokens, a judgement call since a router has no default model (15). Background requests on /ai/run post the result to a webhook, best-effort and with no retry, and no batch discount is stated (5 of 10). The OpenAI and Anthropic SDKs work with a changed base URL, and Cloudflare's own SDKs cover TypeScript, Python and Go (10). Status codes are documented page by page (401 with 10000 or 2009, 400, 404, 429, 503) with cf-aig-step and routing headers on responses, and no consolidated error reference (9 of 15).

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.

Cloudflare AI Gateway 52

x402 is in beta on POST /ai/run since 30 September 2026 for four open models of 241 in the catalogue. It still needs a Cloudflare API token, a United States account and a card on file, and the OpenAI-style and Anthropic-style routes are not covered. We did not call it (12 of 40). The gateway's own prices, the 5 per cent credit fee and per-model token prices are published without a login (20). Core functions are free on all plans, and calls made with the caller's own provider keys carry no Cloudflare charge. We did not sign up to confirm that no card is asked for (20). A person creates the account and the first token in a browser, and the x402 route needs both (0). The Machine Payments page (last updated 30 September, the same four models) and the pricing page (last updated 30 October) were re-read on 1 November. 12 + 20 + 20 + 0 = 52.

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.

Cloudflare AI Gateway 75

Router, read on the model lines. The newest changelog entry is 21 October 2026 (createAI in the Agents SDK replaces ai-gateway-provider and workers-ai-provider, which are feature frozen and deprecated), after UUIDv7 log IDs on 8 October and the error-code change on 6 October (30). No minimum notice for API changes was found. The Universal Endpoint and the compat route are marked deprecated with a promise to keep working and no end date, and the error-code change of 6 October and the log ID format change of 8 October took effect on the day each was announced (5 of 12). No gateway endpoint was shut down in the last 90 days that we found. Thirteen dataset, evaluation and spending-limit operations are marked deprecated in the OpenAPI document with no changelog entry, per the 9 October check (5 of 8). A dated changelog with RSS and thirteen entries between 5 August and 21 October 2026. The Discord community was not sampled (11 of 15). Replies on the SDK repositories were not examined (3 of 10). cloudflare for TypeScript 7.3.0 and Python 5.9.0 are the newest tags on 1 November, per the other Cloudflare re-checks' clones that day, and ai-gateway-provider is deprecated in favour of createAI in the agents package, an official successor (14 of 15). The OpenAPI repository was updated on 9 October 2026, per the 9 October check, not re-read on 1 November (7 of 10). 30 + 5 + 5 + 11 + 3 + 14 + 7 = 75.

Claude Fable 5.2 90

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. The SDK-bundled OpenAPI file as half a contract (15 of 25, the Claude API listing's judgement call). llms.txt with Markdown twins (10). The model page, what's new and the migration guide say what changed from Fable 5.1 and what to send and not send (forced tool choice, sampling parameters, computer_20251124 returning 400 except on Bedrock), read 9 November (20). Structured outputs and strict tools GA (15). Documented error types with request_id (15). anthropic-version and dated release notes (15). 15 + 10 + 20 + 15 + 15 + 15 = 90.

Cloudflare AI Gateway 75

Router, scored on the API lines. Cloudflare's public OpenAPI 3.0.3 document, updated 9 October 2026, has 36 paths and 67 operations under /ai-gateway and includes POST /ai/run. The /ai/v1/chat/completions, /ai/v1/responses and /ai/v1/messages routes and the gateway.ai.cloudflare.com endpoints are not in it (20 of 25). An AI Gateway llms.txt and a Markdown copy of every page (10). Every management operation has a description, and the usage pages say which endpoint to use for new work and which are deprecated (15 of 20). Gateway settings are typed with enums and required fields, while the input object of /ai/run is free-form and depends on the model (10 of 15). Curl, SDK and Worker examples on most pages. No table of gateway error codes was found. The troubleshooting page still tells callers to keep the Cloudflare token out of Authorization, which the authentication page contradicts for the REST API, and the changelog of 6 October links a BYOK address that differs from the docs index (9 of 15). A dated changelog with RSS. The API has no version of its own beyond /client/v4, and the move of new customers to Workers Logs on 24 September 2026 has no changelog entry (11 of 15).

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.

Cloudflare AI Gateway 80

Router, read on the model lines. Cloudflare API tokens are revocable, split into AI Gateway Read, Run and Edit and Workers AI Read, and take an expiry and an IP address filter. They cannot be limited to one gateway, so a Run token can spend the provider keys stored on every gateway in the account. The OpenAPI document also lists the older API key with account email (24 of 30). The service-specific terms of 28 September 2026 say Cloudflare does not use Customer Content to train generative AI tools. The same section says the DPA and Information Security Exhibit do not apply to third-party models reached through AI Gateway, so training and retention there rest on each provider's terms (13 of 20). Prompts and responses are logged by default. Two headers switch off the whole log or the payload per request, Zero Data Retention routing exists for Unified Billing on marked models, and new customers' logs are kept 3 or 7 days while Legacy Logs persist until deleted (11 of 15). Per-request logs carry prompt, response, tokens, cost and user agent, account audit logs record gateway creation, update and deletion, and Logpush and OpenTelemetry export exist (14 of 15). security.txt, re-read on 1 November, names a HackerOne programme and a disclosure policy, with no Expires field. Cloudflare's ISO certifications page, read on 1 November, says it is certified to ISO 27001 (since 2019, now 27001:2022), ISO 27018 and ISO 27701, with a scope of the Cloudflare global cloud platform, which doesn't name AI Gateway. 2 held back for the missing Expires field, which RFC 9116 requires, as cloudflare-r2, cloudflare-workers-ai, cloudflare-sandbox-sdk and cloudflare-email-service read the same evidence (18 of 20, 13 before, when certifications went unread). Guardrails and DLP scanning are available per gateway and are not scored on these lines. 24 + 13 + 11 + 14 + 18 = 80.

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.

Cloudflare AI Gateway 74

Closed service under the Self-Serve Subscription Agreement and service-specific terms with a section for Workers AI and AI Gateway. Each model page links the provider's terms, ai-gateway-provider is MIT and the OpenAPI repository is BSD-3-Clause (16 of 30). The service terms, the logging and Zero Data Retention pages, the DPA (version 6.4, 3 April 2026) and the privacy policy of 4 November 2025 were read. The privacy policy gives retention criteria, not periods. The terms take third-party models outside the DPA, while the sub-processor list names five model providers for AI Gateway, and the two are hard to square (17 of 30). No deprecation policy was found. Deprecated endpoints carry notices with no dates, and section 8 of the agreement lets Cloudflare modify or discontinue a service without notice (6 of 20). The sub-processor list, last updated 1 October 2025, names Google, Anthropic, OpenAI, xAI and Groq for AI Gateway with locations. The catalogue on 9 October 2026 also carries models from Alibaba, ByteDance, MiniMax and others that the list does not name (12 of 20). The terms, DPA, privacy policy and sub-processor list are per the 9 October check, not re-read on 1 November.