Inkling Small is 18.2× cheaper per million tokens (blended). Claude Opus 5 has the larger context window (1,000,000 vs 524,288 tokens, 1.9×). Inkling Small is open-weights; the other is not.
Claude Opus 5 vs Inkling Small
Live catalog fields. Best-in-row is highlighted.
Claude Opus 5
Anthropic · anthropic__claude-opus-5
Inkling Smallopen
Thinkingmachines · thinkingmachines__inkling-small
Identity
| Field | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
|---|---|---|
| Provider | Anthropic | Thinkingmachines |
| Slug | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
| Status | live | live |
| Open weights | No | Yes |
| License | — | — |
| HuggingFace | — | thinkingmachines/Inkling-Small |
Quality
| Field | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
|---|---|---|
| Quality index (0–100) | 93.4 | — |
Cost
| Field | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
|---|---|---|
| Input $ / 1M tokens | $5.00 | $0.45 |
| Cached input $ / 1M | $0.50 | $0.10 |
| Output $ / 1M tokens | $25.00 | $1.20 |
Context
| Field | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
|---|---|---|
| Max context tokens | 1,000,000 | 524,288 |
| Max output tokens | 128,000 | 262,144 |
Modalities
| Field | anthropic__claude-opus-5 | thinkingmachines__inkling-small |
|---|---|---|
| Input | text, image, file | text, image, audio |
| Output | text | text |