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    Synth 2.5 Pro Preview API pricing

    $0.35 in, $0.70 out per million tokens.

    synth-2.5-promanaged routeOpenAI SDK

    Price · per million tokens, USD

    Get a key
    TokensLucidity list priceUplinkSwitchSaving
    Input—$0.35—
    Cached inputBilled at the input rate.
    Output—$0.70—
    No list price on record. Same price on every host.
    Real-model check: No answer at the last check

    Also try

    Synth 2.5 Pro Preview specs

    Context window
    30,000 tokens
    Input
    text

    Synth 2.5 Pro Preview: a hosted roleplay model · no model card; the catalog’s own figures

    Synth 2.5 Pro Preview is a hosted roleplay model from Lucidity. No model card or weights are published for it, so this page states what the catalog does: its context window, output limit and price. It is served as synth-2.5-pro at $0.35 input and $0.70 output per million tokens, one of 146 builds in the uncensored LLM API, on the same key as every other model. Added 2026-10-21.

    Synth 2.5 Pro Preview
    DeveloperLucidity
    Kinda hosted roleplay model
    Weightsnot published
    Context window here30,000 tokens
    Added2026-10-21

    From the live catalog, read 2026-10-21.

    curl
    curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"synth-2.5-pro","max_tokens":1024,"messages":[{"role":"user","content":"Hello"}]}'

    Synth 2.5 Pro Preview next to the other uncensored models · per million tokens, live

    ModelHere, in / out1,000 chat turns
    Synth 2.5 Flash Preview$0.105 / $0.35$0.38
    GLM-5.3 Flash Uncensored$0.1086 / $0.3802$0.41
    Manta Flash 1.0$0.07 / $0.56$0.42
    Manta Mini 1.0$0.07 / $0.56$0.42
    GLM-4.7 Flash Uncensored$0.12 / $0.60$0.54
    GPT OSS 120B Uncensored$0.1095 / $0.728$0.58
    Gemma 4 12B Starry Ocean$0.175 / $0.875$0.79
    Gemma 4 12B StationKeeper$0.175 / $0.875$0.79
    Roleplay Uncensored$0.30 / $0.60$0.90
    Magidonia 24B v4.3$0.3535 / $0.4235$0.92
    MythoMax L2 13B$0.404 / $0.404$1.01
    GLM-5.3 Uncensored$0.291 / $0.873$1.02
    Synth 2.5 Pro Preview$0.35 / $0.70$1.05
    Gemma 4 26B-A4B Uncensored$0.27 / $1.26$1.17
    Gemma 4 31B Split-Untied$0.35 / $1.05$1.22
    Cydonia 24B v4.3$0.484 / $0.60$1.27
    Manta Pro 1.0$0.21 / $1.75$1.30
    Artemis v1.1$0.35 / $1.575$1.49
    Gemma 4 31B Fabled$0.35 / $1.575$1.49
    Gemma 4 31B Gembrain$0.35 / $1.575$1.49
    Gemma 4 31B Gemsicle$0.35 / $1.575$1.49
    Gemma 4 31B Isometry$0.35 / $1.575$1.49
    Gemma 4 31B MeroMero v2$0.35 / $1.575$1.49
    Gemma 4 31B Novelist$0.35 / $1.575$1.49
    Gemma 4 31B Scarlet$0.35 / $1.575$1.49
    Orion 26B A4B v1.1$0.35 / $1.575$1.49
    Gemma 4 26B-A4B ChimeraX$0.42 / $1.33$1.51
    Gemma 4 26B-A4B Luminous Mirror$0.42 / $1.33$1.51
    Gemma 4 26B-A4B MeroMero$0.42 / $1.33$1.51
    Gemma 4 26B-A4B Moonlight Dusk$0.42 / $1.33$1.51
    Gemma 4 26B-A4B Musica$0.42 / $1.33$1.51
    Gemma 4 26B-A4B Opus Distill$0.42 / $1.33$1.51
    Gemma 4 26B-A4B Shadow Siren$0.42 / $1.33$1.51
    Gemma 4 31B DarkIdol$0.40 / $1.80$1.70
    Gemma 4 26B-A4B ChimeraX Heretic$0.484 / $1.52$1.73
    Gemma 4 26B-A4B DarkSoul$0.484 / $1.52$1.73
    DeepSeek V4 Flash 0731 Uncensored$0.4365 / $1.746$1.75
    Qwen3.8 27B Antislop$0.35 / $2.10$1.75
    Qwen3.8 27B Fimi$0.35 / $2.10$1.75
    Qwen3.8 27B Kimiko$0.35 / $2.10$1.75
    Qwen3.8 27B Kiwen$0.35 / $2.10$1.75
    Qwen3.8 27B Novelist$0.35 / $2.10$1.75
    Qwen3.8 27B Synthia$0.35 / $2.10$1.75
    Stheno 8B v3.2$0.7035 / $0.7035$1.76
    GLM-5.3 Flash Cybersecurity$0.525 / $1.75$1.93
    Qwen3.8 27B DarkIdol$0.40 / $2.40$2.00
    Dolphin Mistral 24B Venice Edition$0.50 / $2.25$2.13
    GLM-5.3 Flash Abliterated$0.88 / $0.88$2.20
    GLM-5.3 Flash Apex Abliterated$0.60 / $2.00$2.20
    Amoral Gemma3 27B v2$1.05 / $1.05$2.63
    DeepSeek V4.1 Flash Abliterated$0.875 / $1.75$2.63
    Veiled Calla 12B$1.05 / $1.05$2.63
    Gemma 4 31B Agares v1$1.071 / $1.071$2.68
    Gemma 4 31B Animus V14.1$1.071 / $1.071$2.68
    Gemma 4 31B AssGuard$1.071 / $1.071$2.68
    Gemma 4 31B Cognitive Unshackled$1.071 / $1.071$2.68
    Gemma 4 31B Garnet V2$1.071 / $1.071$2.68
    Gemma 4 31B Gembrain X Core$1.071 / $1.071$2.68
    Gemma 4 31B Isometry RP$1.071 / $1.071$2.68
    Gemma 4 31B K1 v5$1.071 / $1.071$2.68
    Gemma 4 31B Queen$1.071 / $1.071$2.68
    Gemma 4 31B StyleTune$1.071 / $1.071$2.68
    Qwen3.5 27B Blossom V6.4 Derestricted$1.071 / $1.071$2.68
    Qwen3.5 27B BlueStar v3 Derestricted$1.071 / $1.071$2.68
    Qwen3.5 27B Claude 4.6 Opus Reasoning Distilled Derestricted$1.071 / $1.071$2.68
    Qwen3.5 27B Claude 4.6 Opus Reasoning Distilled Derestricted Lite$1.071 / $1.071$2.68
    Qwen3.5 27B Queen Derestricted$1.071 / $1.071$2.68
    Anubis 70B v1.1$1.085 / $1.085$2.71
    DeepSeek V4 Pro Uncensored$1.00 / $2.00$3.00
    Gemma 4 31B Dark Gemistry$1.224 / $1.224$3.06
    Gemma 4 31B Gembrain Heretic$1.224 / $1.224$3.06
    Gemma 4 31B SDFT Heretic RP$1.224 / $1.224$3.06
    Euryale 70B v2.2$1.224 / $1.428$3.16
    Uplink Red Team (Flash)$0.90 / $3.00$3.30
    Cydonia 24B v4.1$1.20 / $2.00$3.40
    Hy3 Uncensored$0.75 / $4.00$3.50
    Laguna S 2.1 Uncensored$0.75 / $4.00$3.50
    MiMo-V2.5-Pro Uncensored$0.75 / $4.00$3.50
    MiMo-V2.5 Uncensored$0.75 / $4.00$3.50
    MiniMax M3 Uncensored$0.75 / $4.00$3.50
    Rocinante 12B v1.1$1.428 / $2.0825$3.90
    Hermes 3 Llama 3.1 70B$1.632 / $1.632$4.08
    Celeste 70B v0.1$1.7255 / $1.7255$4.31
    Cu-Mai R1 70B$1.7255 / $1.7255$4.31
    Hanami 70B x1$1.7255 / $1.7255$4.31
    Mag Mell R1 12B$1.7255 / $1.7255$4.31
    MN LooseCannon 12B$1.7255 / $1.7255$4.31
    NemoMix Unleashed 12B$1.7255 / $1.7255$4.31
    Nevoria 70B$1.7255 / $1.7255$4.31
    Nevoria R1 70B$1.7255 / $1.7255$4.31
    Starcannon Unleashed 12B v1.0$1.7255 / $1.7255$4.31
    Llama 3.05 Storybreaker 70B Ministral$1.7255 / $1.7255$4.31
    Llama 3.05 Storybreaker 70B Tenyxchat$1.7255 / $1.7255$4.31
    Qwen3.8 27B Fable$0.875 / $5.25$4.38
    Qwen3.8 27B Hemingway$0.875 / $5.25$4.38
    Qwen3.8 27B Queen$0.875 / $5.25$4.38
    Qwen3.8 27B Uncensored$1.25 / $3.75$4.38
    NeuralDaredevil 8B Abliterated$1.76 / $1.76$4.40
    Chat Uncensored$1.50 / $3.00$4.50
    GLM 5.2 Uncensored$1.095 / $4.68$4.53
    Hermes 4 405B$1.20 / $4.80$4.80
    Euryale 70B v2.3$1.972 / $1.972$4.93
    Magnum Diamond 24B$1.972 / $1.972$4.93
    UnslopNemo 12B v4.1$1.972 / $1.972$4.93
    The Omega Directive 24B v2.0$2.00 / $2.00$5.00
    Skyfall 36B v2$1.925 / $2.80$5.25
    GLM-4.6 Derestricted v5$1.40 / $5.25$5.43
    Qwen3.8 27B Obliterated$1.00 / $7.00$5.50
    Nemotron 3 Ultra 550B Uncensored$1.125 / $6.60$5.55
    ReMM SLERP L2 13B$2.036 / $3.78$5.96
    Uplink Red Team (Pro)$1.50 / $6.00$6.00
    Kimi K2.6 Uncensored$1.17 / $7.34$6.01
    Electra R1 70B$2.45 / $2.45$6.13
    Wayfarer Large 70B$2.4535 / $2.4535$6.13
    GLM 4.7 Uncensored$1.527 / $7.27$6.69
    GLM-5.3 Abliterated$2.25 / $4.50$6.75
    DeepSeek R1 Distill Llama 70B Abliterated$2.80 / $2.80$7.00
    Llama 3 70B Abliterated v3.5$2.80 / $2.80$7.00
    Llama 3.3 70B Abliterated$2.80 / $2.80$7.00
    MiMo V2.6 Flash Abliterated$2.00 / $6.00$7.00
    MiMo V2.6 Flash Uncensored$2.00 / $6.00$7.00
    Qwen2.5 32B Abliterated$2.80 / $2.80$7.00
    Gemma 31B Heretic Uncensored$1.50 / $8.25$7.13
    QwQ 32B Uncensored$2.64 / $4.00$7.28
    EVA Qwen2.5 72B$3.196 / $3.196$7.99
    Aion RP Llama 3.1 8B$3.20 / $6.40$9.60
    Inkling Uncensored$2.13 / $12.14$10.33
    Lumimaid v0.2 70B$4.00 / $6.00$11.00
    DansPE 1.3 24B$2.908 / $11.632$11.63
    Code Pro Uncensored$4.50 / $9.00$13.50
    DeepSeek R1 Distill Qwen 32B Abliterated$5.60 / $5.60$14.00
    GLM-5.3 Flash Code Uncensored$6.00 / $6.00$15.00
    No Filter AI$5.85 / $7.80$15.60
    NSFW AI Chat$5.85 / $7.80$15.60
    Uncensored AI Assistant$5.85 / $7.80$15.60
    Uncensored AI Companion$5.85 / $7.80$15.60
    Uncensored AI Writer$5.85 / $7.80$15.60
    Uncensored Chatbot$5.85 / $7.80$15.60
    Unfiltered AI$5.85 / $7.80$15.60
    CyberHeabsy$5.25 / $15.75$18.38
    EVA LLaMA 3.33 70B$8.024 / $8.024$20.06
    Magnum v4 72B$8.024 / $11.968$22.03
    Kimi K3 Uncensored$5.745 / $28.68$25.83
    Uncensored AI Chat$11.70 / $15.60$31.20
    Uncensored Code Assistant$11.70 / $15.60$31.20
    Unrestricted AI$11.70 / $15.60$31.20

    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 Synth 2.5 Pro Preview: 1,000 turns are 2,000,000 input tokens and 500,000 output tokens. At $0.35 input and $0.70 output per million tokens, that is $0.70 + $0.35 = $1.05, paid from prepaid credit with no subscription.

    Synth 2.5 Pro Preview 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="synth-2.5-pro",
    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: 'synth-2.5-pro',
  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":"synth-2.5-pro","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 Lucidity

    Synth 2.5 Pro Preview questions

    What is Synth 2.5 Pro Preview?
    Synth 2.5 Pro Preview is a model from Lucidity, with a 30,000-token context window, taking text input. Through UplinkSwitch it answers the OpenAI SDK on one key as synth-2.5-pro.
    How much does the Synth 2.5 Pro Preview API cost?
    $0.35 per million input tokens and $0.70 per million output tokens.
    Is Synth 2.5 Pro Preview 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 $0.0007.
    What is the Synth 2.5 Pro Preview context window?
    Synth 2.5 Pro Preview has a 30,000-token context window. It takes text input.
    What is the Synth 2.5 Pro Preview model id?
    synth-2.5-pro. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.
    How do I get a Synth 2.5 Pro Preview 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 Synth 2.5 Pro Preview and every other model in the catalog; send it as the bearer token with base URL https://api.uplinkswitch.com/v1.
    Is there a Synth 2.5 Pro Preview API?
    Yes: synth-2.5-pro on the OpenAI format at https://api.uplinkswitch.com/v1, $0.35 input and $0.70 output per million tokens. No weights to download and no GPU of your own; the key also runs every other model in the catalog.
    Is Synth 2.5 Pro Preview open source?
    No. No weights or model card are published for it; it is available only as a hosted model, here per token on the OpenAI format.
    What is Synth 2.5 Pro Preview based on?
    Lucidity has not published a base model, parameter count or training notes for it. The catalog lists a 30,000-token context window.
    What does Synth 2.5 Pro Preview cost per 100 messages?
    $0.105 for 100 chat turns of 2,000 input and 500 output tokens each, at $0.35 input and $0.70 output per million tokens, from prepaid credit with no subscription.
    Synth 2.5 Pro Preview or Synth 2.5 Flash Preview?
    Both are Lucidity’s Synth 2.5 previews with a 30,000-token context; Flash is the lower-priced tier. Synth 2.5 Pro Preview is $0.35 / $0.70 per million tokens in / out, $1.05 for 1,000 chat turns; Synth 2.5 Flash Preview is $0.105 / $0.35 per million tokens in / out, $0.38 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 AI for roleplay.
    Get a key · All models