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    Hermes 4 405B API pricing

    $0.90 in, $3.60 out per million tokens.

    hermes-4-405bmanaged routeOpenAI SDK

    Price · per million tokens, USD

    TokensNous Research list priceUplinkSwitchSaving
    Input—$0.90—
    Cached inputBilled at the input rate.
    Output—$3.60—
    No list price on record. Same price on every host.
    Real-model check: Same fingerprint since Oct 20

    Hermes 4 405B specs

    Context window
    128,000 tokens
    Input
    text

    Hermes 4 405B: Nous Research’s Llama 3.1 405B on one key · a hybrid reasoning model trained to follow the user

    Hermes 4 405B is Nous Research's post-train of Meta's Llama 3.1 405B (its card). Nous built it as a hybrid reasoning model: it can deliberate in <think> segments before it answers, or answer directly. The card says it is aligned to the user, with broadly neutral alignment, and that the training set grew to about 5 million samples and 60 billion tokens, with gains in math, code, logic and creative writing. It is served as hermes-4-405b at $0.90 input and $3.60 output per million tokens, one of 49 builds in the uncensored LLM API, on the same key as every other model. Added 2026-10-20.

    Hermes 4 405B
    Base modelLlama 3.1 405B
    Made byNous Research
    MethodPost-training, about 5M samples and 60B tokens
    License on the cardllama3
    Context window here128,000 tokens
    Downloads, 30 days to 2026-10-201,167
    CardNousResearch/Hermes-4-405B

    From the Hugging Face card and its API record, read 2026-10-20.

    curl
    curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"hermes-4-405b","max_tokens":1024,"messages":[{"role":"user","content":"Hello"}]}'

    Hermes 4 405B next to the other uncensored models · per million tokens, live

    ModelHere, in / out1,000 chat turns
    GLM-5.3 Flash Uncensored$0.084 / $0.084$0.21
    GLM-5.3 Uncensored$0.1746 / $0.1746$0.44
    GLM-4.7 Flash Uncensored$0.12 / $0.60$0.54
    MythoMax L2 13B$0.303 / $0.303$0.76
    Roleplay Uncensored$0.30 / $0.60$0.90
    Cydonia 24B v4.3$0.363 / $0.45$0.95
    Gemma 4 26B-A4B Uncensored$0.27 / $1.26$1.17
    Gemma 4 31B DarkIdol$0.30 / $1.35$1.28
    Gemma 4 26B-A4B ChimeraX Heretic$0.363 / $1.14$1.30
    Gemma 4 26B-A4B DarkSoul$0.363 / $1.14$1.30
    Qwen3.8 27B DarkIdol$0.30 / $1.80$1.50
    GLM-5.3 Flash Abliterated$0.66 / $0.66$1.65
    GLM-5.3 Flash Apex Abliterated$0.45 / $1.50$1.65
    DeepSeek V4 Pro Uncensored$0.75 / $0.75$1.88
    Dolphin Mistral 24B Venice Edition$0.50 / $2.25$2.13
    Gemma 4 31B Dark Gemistry$0.918 / $0.918$2.30
    Gemma 4 31B Gembrain Heretic$0.918 / $0.918$2.30
    Gemma 4 31B SDFT Heretic RP$0.918 / $0.918$2.30
    Euryale 70B v2.2$0.918 / $1.071$2.37
    Cydonia 24B v4.1$0.90 / $1.50$2.55
    DeepSeek V4.1 Flash Abliterated$1.05 / $1.05$2.63
    Hermes 3 Llama 3.1 70B$1.224 / $1.224$3.06
    NeuralDaredevil 8B Abliterated$1.32 / $1.32$3.30
    Hermes 4 405B$0.90 / $3.60$3.60
    Euryale 70B v2.3$1.479 / $1.479$3.70
    Magnum Diamond 24B$1.479 / $1.479$3.70
    UnslopNemo 12B v4.1$1.479 / $1.479$3.70
    The Omega Directive 24B v2.0$1.50 / $1.50$3.75
    Qwen3.8 27B Obliterated$0.75 / $5.25$4.13
    Qwen3.8 27B Uncensored$1.25 / $3.75$4.38
    ReMM SLERP L2 13B$1.527 / $2.835$4.47
    Chat Uncensored$1.50 / $3.00$4.50
    DeepSeek R1 Distill Llama 70B Abliterated$2.10 / $2.10$5.25
    Llama 3 70B Abliterated v3.5$2.10 / $2.10$5.25
    Llama 3.3 70B Abliterated$2.10 / $2.10$5.25
    MiMo V2.6 Flash Abliterated$1.50 / $4.50$5.25
    MiMo V2.6 Flash Uncensored$1.50 / $4.50$5.25
    Qwen2.5 32B Abliterated$2.10 / $2.10$5.25
    QwQ 32B Uncensored$1.98 / $3.00$5.46
    GLM-5.3 Abliterated$2.25 / $2.25$5.63
    EVA Qwen2.5 72B$2.397 / $2.397$5.99
    Gemma 31B Heretic Uncensored$1.50 / $8.25$7.13
    Aion RP Llama 3.1 8B$2.40 / $4.80$7.20
    Lumimaid v0.2 70B$3.00 / $4.50$8.25
    DeepSeek R1 Distill Qwen 32B Abliterated$4.20 / $4.20$10.50
    Code Pro Uncensored$4.50 / $9.00$13.50
    GLM-5.3 Flash Code Uncensored$6.00 / $6.00$15.00
    EVA LLaMA 3.33 70B$6.018 / $6.018$15.05
    Magnum v4 72B$6.018 / $8.976$16.52

    A chat turn is 2,000 input and 500 output tokens. Live from the catalog, ordered by the cost of 1,000 turns.

    Worked for Hermes 4 405B: 1,000 turns are 2,000,000 input tokens and 500,000 output tokens. At $0.90 input and $3.60 output per million tokens, that is $1.80 + $1.80 = $3.60, paid from prepaid credit with no subscription.

    Hermes 4 405B API · base URL and key

    Python · OpenAI SDK
    from openai import OpenAI

client = OpenAI(
    base_url="https://api.uplinkswitch.com/v1",
    api_key="sk-uplink-live-...",
)

completion = client.chat.completions.create(
    model="hermes-4-405b",
    messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)
    TypeScript · OpenAI SDK
    import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.uplinkswitch.com/v1',
  apiKey: 'sk-uplink-live-...',
});

const completion = await client.chat.completions.create({
  model: 'hermes-4-405b',
  messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);
    curl
    curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"hermes-4-405b","messages":[{"role":"user","content":"Hello"}]}'
    Guides: SillyTavern, Janitor AI, Chub AI, SDKs.

    What would it cost? · paste a prompt, priced before you send it

    Input is counted at about 4 characters per token.

    Cheapest first. A real request is billed on the provider's own token count. Same estimate as JSON: POST https://api.uplinkswitch.com/v1/estimate, no key needed.

    More from Nous Research

    Hermes 4 405B questions

    What is Hermes 4 405B?
    Hermes 4 405B is a model from Nous Research, with a 128,000-token context window, taking text input. Through UplinkSwitch it answers the OpenAI SDK on one key as hermes-4-405b.
    How much does the Hermes 4 405B API cost?
    $0.90 per million input tokens and $3.60 per million output tokens.
    Is Hermes 4 405B free?
    It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0027.
    What is the Hermes 4 405B context window?
    Hermes 4 405B has a 128,000-token context window. It takes text input.
    What is the Hermes 4 405B model id?
    hermes-4-405b. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.
    How do I get a Hermes 4 405B API key?
    Create one in the console at uplinkswitch.ai/console: prepaid credit from $10, no subscription, and the key is live at once. The same key calls Hermes 4 405B and every other model in the catalog; send it as the bearer token with base URL https://api.uplinkswitch.com/v1.
    Is it the real Hermes 4 405B?
    Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. Hermes 4 405B's latest result: Same fingerprint since Oct 20.
    Is there a Hermes 4 405B API?
    Yes: hermes-4-405b on the OpenAI format at https://api.uplinkswitch.com/v1, $0.90 input and $3.60 output per million tokens. No weights to download and no GPU of your own; the key also runs every other model in the catalog.
    What is Hermes 4 405B based on?
    Meta’s Llama 3.1 405B. Nous Research post-trained it on about 5 million samples (about 60 billion tokens) of reasoning and non-reasoning data, per the Hermes 4 405B card.
    What license does Hermes 4 405B have?
    The card’s license tag is llama3, Meta’s Llama community license, which Hermes inherits from Llama 3.1 405B.
    What does Hermes 4 405B cost per 100 messages?
    $0.36 for 100 chat turns of 2,000 input and 500 output tokens each, at $0.90 input and $3.60 output per million tokens, from prepaid credit with no subscription.
    Is Hermes 4 405B uncensored?
    Nous Research trains Hermes to follow the user and the system prompt rather than a fixed policy; its card describes it as aligned to you, with broadly neutral alignment. It is a post-train, not an abliteration. For builds with the refusal direction removed from the weights, the uncensored list at uplinkswitch.ai/uncensored marks them Abliterated.
    Does Hermes 4 405B reason?
    Yes, when it decides to: its card calls it a hybrid-mode reasoning model that writes its deliberation in <think> segments, and answers directly otherwise. Give it room in max_tokens (1,000 or more) for problems that need working out. At $0.90 input and $3.60 output per million tokens, thinking tokens bill as output.
    Hermes 4 405B or Hermes 3 Llama 3.1 70B?
    Hermes 4 is the 405B reasoning model; Hermes 3 is the 70B generalist from the previous series. Hermes 4 405B is $0.90 / $3.60 per million tokens in / out, $3.60 for 1,000 chat turns; Hermes 3 Llama 3.1 70B is $1.224 / $1.224 per million tokens in / out, $3.06 for 1,000 chat turns. Both run on the same key, so send the same prompt to each.
    Every uncensored model: Uncensored LLM API. Read: Best uncensored LLM.
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