Gemini 4 Hydrogen vs Simplismart

Gemini 4 Hydrogen 90

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Function calling, with forced calls by FunctionCallingConfig on the API (20). Structured output to a response_schema, listed as supported on the Cloud model page (13 of 15). Implicit caching on prefixes of 4,096 tokens or more with durable caching on by default and explicit caches not supported, per the Cloud model page; the announcement names no cached-input price (12 of 15). 1,048,576 tokens shared between input and output, with background long decode up to 1M (15). Batch at half price on the platform (10). Python and JavaScript SDKs, and an OpenAI-compatible Chat Completions surface (10). Error codes with backoff guidance (10 of 15). 20 + 13 + 12 + 15 + 10 + 10 + 10 = 90.

Simplismart 45

Read by the HTTP API checklist, as listed (http-api) and as fireworks-inference, together-inference and cerebras-inference are; the 28 October model reading is withdrawn. Compact OpenAI-style chat request, with max_tokens bounded 1 to 4,096 and streaming in the OpenAPI files (25). Output size set by max_tokens, with streaming; no structured output, tools or batch documented (20). Errors are bare 400, 401 and 500 descriptions in the OpenAPI files, a documented 401 after key expiry and an SDK example of a 404 payload, with no error codes or bodies for the inference API. That partly meets a fixed 20 line graded here for the first time, with no earlier partial on it to keep, so it scores 0, as a new in-between value isn't set on a fixed line (weatherbit, withhuman) (0 of 20). No retry, 429 or deduplication guidance found (0 of 20). Two required parameters (model, messages) and the OpenAI client for inference; the official simplismart-sdk is Python only and manages deployments, not inference. One SDK language doesn't meet the fixed 15 line, and with no earlier partial on it the line is 0 (0 of 15). Readings per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 25+20+0+0+0 = 45.

Gemini 4 Hydrogen 85

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Released on 12 November 2026, recorded in Google Cloud's release notes; the Gemini API changelog, last updated 30 October, has no entry for it yet (30). Google Cloud states a minimum of 45 days' notice before Hydrogen is retired, short and stated for Cloud only; the Gemini API's deprecations give earliest dates with no stated minimum (6 of 12). Shutdowns in the last 90 days kept to their table (4 of 8). Dated changelog (15). SDK replies not sampled (5 of 10). Current SDKs; the developer guide names the minimum google-genai, @google/genai, Go and Java versions (15). Runtimes stated (10). 30 + 6 + 4 + 15 + 5 + 15 + 10 = 85.

Simplismart 40

Read by the HTTP API checklist, as listed (http-api) and as fireworks-inference, together-inference and cerebras-inference are; the 28 October model reading is withdrawn. Muse Spark Open was added to the shared endpoints in beta on 19 October 2026, 23 days before this check (30). A docs sitemap date isn't a product change and no longer counts. One dated model addition in the 90 days to 11 November, and the community pipecat-simplismart package by the simpli-smart account has had no release since 0.1.0 on 5 May 2026 (clone), so fewer than three dated entries (0). No public changelog or community channel. Support is support@simplismart.ai and a contact form, not tested (4 of 15). simplismart-sdk for Python, documented with a CLI, and the OpenAI client for inference. No TypeScript SDK, and the version and date on PyPI are unchecked (pypi.org didn't resolve on 11 November) (6 of 15, an in-between value held). Package health and CI not checked (0). Readings per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 30+0+4+6+0 = 40.

Gemini 4 Hydrogen 72

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Closed service with clear terms, SDKs Apache-2.0 (15). Free-tier content is used to improve products, paid-tier content isn't, abuse retention has no number, and request storage is on by default for new paid projects; the statements agree with each other (20 of 30). Deprecations table, and a stated 45-day minimum on Cloud (15 of 20). Data may be cached anywhere Google has facilities; no subprocessor list checked (5 of 20). A DeepMind model card gives a March 2026 knowledge cutoff, automated safety results and Frontier Safety Framework outcomes, with the full safety report marked coming soon. Every benchmark figure is Google's own. 15 + 20 + 15 + 5 = 55.

Simplismart 29

Closed service. The terms, last updated 13 January 2023, name Verute Technologies Private Limited and Indian law but define the Service as the website, grant Simplismart a licence to use and redistribute posted Content, bar robots and automatic access, and rule out refunds. No API or platform terms were found (8 of 30). The privacy policy, effective 13 January 2023, is a website policy that says personal data is processed in India. It says nothing about prompts, outputs, logs or training, and no DPA, retention period or subprocessor list was found. A Simplismart article claims GDPR and HIPAA support (3 of 30). No deprecation policy or dated removals (0 of 20). Data goes to India per the privacy policy, and an article says workloads are kept in approved regions by scheduling policy. No subprocessor or hosting-provider list (3 of 20). Terms re-read on 11 November, unchanged; the privacy policy is per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 8+3+0+3 = 14.

Gemini 4 Hydrogen 85

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Discovery document for GenerateContent (20 of 25). llms.txt with Markdown twins (10). The Cloud developer guide says what Hydrogen takes, every parameter that's ignored or returns 400, the thought-signature rules and how to migrate from Gemini 3.8 Flash, though it doesn't document forced calls (15 of 20). Structured output to a JSON Schema with some keywords not enforced (10 of 15). Examples and an errors page (15). Dated changelog and model versions (15). 20 + 10 + 15 + 10 + 15 + 15 = 85.

Simplismart 51

Read by the HTTP API checklist, on the same lines as before. OpenAPI 3.1 files for seven LLMs and 3.0 or 3.1 files for Whisper, Flux, an LLM metrics call and training jobs. They cover a handful of the 150+ models, omit tools and response_format, show a streaming delta as the non-streaming response, and several name hosts on s9t.link instead of api.simplismart.live. The Llama 4 Maverick file gives llama3_1 as its only model id, and /api-reference/openapi.json is the Flux spec (12 of 25). llms.txt and a Markdown copy of each docs page (10). The docs say when to use shared or dedicated endpoints; model pages carry one-line descriptions (10 of 20). Roles are enums, temperature is bounded 0 to 2, max_tokens 1 to 4096, and messages and model are required (10 of 15). curl and OpenAI-client Python examples. Errors are bare 400, 401 and 500 descriptions, plus an SDK example of a 404 payload (7 of 15). No changelog. Every spec reads version 1.0.0 (2 of 15). The contract 12 and versioning 2 are in-between values on fixed lines, held. Readings per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 12+10+10+10+7+2 = 51.

Gemini 4 Hydrogen 45

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Status page at aistudio.google.com/status with no readable components or history (10 of 20) and no readable incident record (5 of 30). Rate-limit tiers and spend limits published, per-model limits in AI Studio (5 of 15). Backoff guidance for 429 and 503 and SDK retries (15). No SLA (0). Google Cloud's release notes and model page call Hydrogen generally available, a short-term release, under the same model ID; the Gemini API pages read don't name a stage, so full marks rest on Cloud's statement (10, a judgement call; Carbon, with no stage stated anywhere, got 5). 10 + 5 + 5 + 15 + 0 + 10 = 45.

Simplismart 15

Hosted reading, as listed (http-api). No status page found. The docs and site link none, a search found none, and status.simplismart.ai could not be reached from our network (0). No readable incident history (5). No request or token rate limits are published for shared endpoints. The docs give GPU quotas for training, compilation and private deployments only, 1 H100 and 1 L40 on the Quotas page and 8 of each on the Organisation page (0). No 429 response, Retry-After header or retry guidance found; the OpenAPI files list only 400, 401 and 500 (0). No SLA document found. The homepage claims 99.99% uptime and a Simplismart post calls its autoscaling SLA-backed, but no terms state a commitment, and the terms supply the service as is (0). Shared endpoints carry no beta label, while Muse Spark Open is in beta (10). Readings per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 0+5+0+0+0+10 = 15.

Gemini 4 Hydrogen 50

Model reading for gemini-4-hydrogen on the Gemini API. Platform facts are the Gemini API listing's (gemini-api, re-read 1 November), carried over as RULES.md allows for a model on an already graded platform. Keys bound to a service account and restricted to the Gemini API, with no scopes and a token accepted in the URL (15 of 30, the platform's deduction). Hydrogen is on the free tier, where Google's terms say content is used to improve products and may be read by humans; paid-tier content isn't (10 of 20, the platform's reading; Carbon, paid tier only, got 15). Abuse retention has no number and new paid projects store requests by default since 26 October; Google's prompt-injection figure (2.3 times more resilient on Gray Swan's benchmark) is its own, and the model card says jailbreak resistance is still being improved (5 of 15). Request logs for billed projects (15). security.txt and a reward programme, no certification naming the API (5 of 20). 15 + 10 + 5 + 15 + 5 = 50.

Simplismart 40

Read by the HTTP API checklist, as listed (http-api) and as fireworks-inference, together-inference and cerebras-inference are; the 28 October model reading is withdrawn. Named Bearer keys with an expiry chosen at creation, a 401 after expiry and immediate deletion. No scopes or per-key limits found, keys belong to the organisation, and the SDK uses a separate Playground token (20 of 30). Organisation roles (Admin, Member, Billing User) and workspaces that scope models and deployments limit people, but keys are organisation-wide with no read-only or inference-only permission (5 of 20). No inference prompt-injection mitigation or guidance found (0 of 15). The Usage page shows request counts and a per-request timeline per model, and an LLM metrics call returns token counts and timings per request id. A Simplismart article claims exportable audit trails, not documented (8 of 15). The homepage shows GDPR, ISO 27001 v2022 and AICPA SOC 2 badges, and a Simplismart article says it holds a SOC 2 Type 2 report, available on request. No trust centre was reachable, security.txt answered 404, and no disclosure policy or bug bounty was found (7 of 20). No statement on training on API data or prompt retention was found, recorded for reviewers and not scored on this checklist. Readings per the 28 October check, not re-read on 11 November since simplismart.ai hosts are paused on the terms' ban on robots and automatic access. 20+5+0+8+7 = 40.