Decision model pricing calculator: what Jev, Clef, Decider and Luna Decisions cost for your workload
Enter how many evaluations you run a month, how long the text is and how many questions each call asks. The table estimates input tokens per call for all five decision models, the monthly bill at each vendor’s list price, and the cost on JevStation. The token counts come from our own calls on 2026-10-07, because list prices alone mislead: Perplexity Decider has the lowest price per token but bills the text once per question.
JevTypeSafe · $0.042 / 100万入力
- 直接利用・月額
- $2.66最安
- JevStation・月額
- $137.10
- 1回の入力トークン
- 634
- 1回のクレジット
- 1
Clef-flashCloudflare · $0.09 / 100万入力
- 直接利用・月額
- $5.53
- JevStation・月額
- $137.10
- 1回の入力トークン
- 614
- 1回のクレジット
- 1
ClefCloudflare · $0.24 / 100万入力
- 直接利用・月額
- $14.74
- JevStation・月額
- $270.30
- 1回の入力トークン
- 614
- 1回のクレジット
- 2
DeciderPerplexity · $0.04 / 100万入力
- 直接利用・月額
- $3.94
- JevStation・月額
- $270.30
- 1回の入力トークン
- 986
- 1回のクレジット
- 2
Luna DecisionsOpenAI · $0.10 / 100万入力
- 直接利用・月額
- $6.84
- JevStation・月額
- $137.10
- 1回の入力トークン
- 684
- 1回のクレジット
- 1
実測した呼び出しに当てはめたトークンモデルによる推定です。5モデルとも出力トークンは無料。直接利用の価格にゲートウェイ手数料は含みません。JevStation の列は、登録時の 200 クレジットを差し引いた後の買い切りクレジットパックの最安組み合わせです。
How the estimate works
Each model’s row uses a token formula fitted to nine or more real calls per model on 2026-10-07 (three text lengths × one, three and five questions), then multiplies by the list price per million input tokens.
| Model | List price, input | Input tokens per call, our fit |
|---|---|---|
| Jev | $0.042 / M | 260 + 0.163 × characters + 43 × questions |
| Clef-flash | $0.09 / M | 29 + 0.168 × characters + 111 × questions ¹ |
| Clef | $0.24 / M | 29 + 0.168 × characters + 111 × questions ¹ |
| Perplexity Decider | $0.04 / M | questions × (84 + 0.163 × characters) |
| OpenAI Luna Decisions | $0.10 / M | 22 + 0.163 × characters + 139 × questions |
¹ On Cloudflare Workers AI on 2026-10-04 the text part stopped counting at about 2,048 tokens because the rest was not read. When we retested on 2026-10-07, both on Workers AI and through OpenRouter, Clef read and billed the whole text, so the formula now applies without a cap.
The formulas are for English prose. Code, JSON and Chinese, Japanese or Korean text produce more tokens per character on every model.
Three workloads, priced
At list price, per 100,000 evaluations:
| Workload | Jev | Clef-flash | Clef | Decider | Luna Decisions |
|---|---|---|---|---|---|
| Router: 1 question, 300 characters | $1.48 | $1.71 | $4.56 | $0.53 | $2.10 |
| Ticket triage: 3 questions, 1,500 characters | $2.66 | $5.53 | $14.74 | $3.94 | $6.84 |
| Document review: 5 questions, 8,000 characters | $7.47 | $17.35 | $46.27 | $27.76 | $20.21 |
The cheapest model changes with the shape of the request. Decider wins the router case by a wide margin and loses the document case to everything but Clef.
Sources
- List prices. TypeSafe, Cloudflare Workers AI and OpenRouter (vendor)
- Token formulas. Our calls on 2026-10-04 (Clef, Workers AI; cap retested 2026-10-07) and 2026-10-07 (Decider and Luna Decisions, OpenRouter) (ours); Jev from What One Jev Evaluation Costs (ours)
- How these models compare on accuracy. Decision models compared (ours)
よくある質問
- Which decision model is the cheapest?
- For one question per call, Perplexity Decider: $0.04 per million input tokens and the fewest tokens per single-question call in our tests. For several questions on the same text, Jev or OpenAI Luna Decisions, because Decider reads the text again for every question. The calculator shows the crossover for your numbers.
- Why do token counts differ between models with similar prices?
- Tokenizers and prompt formats differ, and one model bills differently. We measured: Jev ≈ 260 + 0.163 × characters + 43 × questions; Clef and Clef-flash ≈ 29 + 0.168 × characters + 111 × questions, for the whole text; Luna Decisions ≈ 22 + 0.163 × characters + 139 × questions; Decider ≈ questions × (84 + 0.163 × characters).
- Are output tokens charged?
- No. All five decision models bill input tokens only; the answer, a few probabilities, is free.
- How does JevStation price these models?
- Per evaluation in credits, not per token: 1 credit for a standard evaluation (up to 8,000 characters and five questions) and 3 for a large one, doubled for Clef and Perplexity Decider. Credits come in one-time packs, and the first 200 are free on sign-up.
- Is going direct cheaper?
- At high volume and list price, usually yes: you pay only tokens. You also write and run the integration for each vendor, and Jev direct needs TypeSafe waitlist access. JevStation trades a per-call margin for one key, one request format, a playground, batch runs and refunds on failure.
関連
- 意思決定モデル比較Jev・Clef・Clef-flash・Perplexity Decider・OpenAI Luna Decisions を同じ入力で実測：精度、キャリブレーション、コスト、レイテンシ。
- Jev vs DeciderPerplexity Decider against Jev: same contract, measured accuracy, calibration, latency, and per-question billing.
- Decisions API alternativesOpenAI Decisions API without the waitlist, plus Jev, Clef and Perplexity Decider: measured accuracy, cost, and how to port a request.
パイプラインに組み込む
新規登録で 200 クレジットを無料進呈。独自の質問セットを保存し、同じ評価を API から呼び出せます。