AI21 lists 1 models and Scaledown 2. Scaledown is cheaper on a typical model ($0.03 per 1M tokens median). Below: line-up, price tiers, the cheapest model for each capability, and what each costs for five real workloads.
| AI21 | Scaledown | |
|---|---|---|
| Models listed | 1 | 2 |
| Models with published pricing | 1 | 2 |
| Typical price (median, 3:1 blend per 1M) | $3.50 | $0.03 |
| Cheapest paid model | AI21: Jamba Large 1.7 ($3.50) | ScaleDown: Extract ($0.03) |
| Longest context | AI21: Jamba Large 1.7 (256K) | ScaleDown: Extract (1M) |
| Free models | 0 | 0 |
| Newest model | AI21: Jamba Large 1.7 (2025-08-08) | ScaleDown: Extract (2026-10-13) |
| Price changes in the last 90 days | 0 | 0 |
For each workload: the cheapest model from each provider that can actually do it (fits the context window; tool calling required for the agent), and its monthly cost at list price.
| Workload (per month) | AI21 | Scaledown |
|---|---|---|
| Customer-support chatbot 50,000 conversations — each a 6-turn conversation | $310 with AI21: Jamba Large 1.7 | $3.00 with ScaleDown: Extract |
| RAG search over documents 20,000 questions — each a question answered from ~8 retrieved passages | $320 with AI21: Jamba Large 1.7 | $4.80 with ScaleDown: Extract |
| Coding / tool-using agent 2,000 tasks — each a multi-step task with tool calls and file context | $336 with AI21: Jamba Large 1.7 | no suitable model |
| Batch summarisation 10,000 documents — each a 6,000-word report summarised to a page | $208 with AI21: Jamba Large 1.7 | $3.20 with ScaleDown: Extract |
| Long-document analysis 500 documents — each a 150-page contract or codebase read in one pass | $108 with AI21: Jamba Large 1.7 | $2.00 with ScaleDown: Extract |
| You need | AI21 | Scaledown |
|---|---|---|
| Any model | AI21: Jamba Large 1.7 ($3.50) | ScaleDown: Extract ($0.03) |
| With tool calling | AI21: Jamba Large 1.7 ($3.50) | none listed |
| With image input | none listed | ScaleDown: Extract ($0.03) |
| With reasoning mode | none listed | none listed |
| 128K+ context | AI21: Jamba Large 1.7 ($3.50) | ScaleDown: Extract ($0.03) |
| 1M+ context | none listed | ScaleDown: Extract ($0.03) |
| Model type | AI21 | Scaledown |
|---|---|---|
| text+image+file->text | 0 | 2 |
| text->text | 1 | 0 |
| Price per 1M (3:1 blend) | AI21 | Scaledown |
|---|---|---|
| Free | 0 | 0 |
| Under $0.50 | 0 | 2 |
| $0.50 – $3 | 0 | 0 |
| $3 – $10 | 1 | 0 |
| $10 and up | 0 | 0 |
Scaledown is cheaper on a typical model: a median of $0.03 per 1M tokens (3:1 input/output) against $3.50 for AI21. The cheapest paid models are AI21: Jamba Large 1.7 at $3.50 and ScaleDown: Extract at $0.03.
It depends on the job: Scaledown offers the broader line-up (1 models vs 2), Scaledown the lower typical price, Scaledown the longest context (1M tokens). The workload table above shows which wins for chat, RAG, agents, batch jobs and long documents.
Scaledown: AI21 lists 1 models and Scaledown lists 2.
Scaledown: AI21's longest is AI21: Jamba Large 1.7 at 256K tokens; Scaledown's is ScaleDown: Extract at 1M.
Neither lists a free model; both are pay-per-token.
AI21: 0 of 1 models accept images. Scaledown: 2 of 2.