Models
Observed 2026-11-10 from GET /v1/models and live requests. Prices: official pricing page, USD per million tokens. Models the probing key could not see (for example the Mythos line) are absent.
Current generation: claude-fable-5-2 (most capable), claude-opus-5-5 (default), claude-sonnet-5-5 (balanced), claude-haiku-5-5 (cheapest).
| Model id | Context | Max output | Input | Output | Cache read | Batch in / out |
|---|---|---|---|---|---|---|
claude-fable-5-2 |
1M | 128K | $8 | $40 | $0.2 | $4 / $20 |
claude-haiku-5-5 |
1M | 128K | $0.1 | $0.5 | $0.01 | $0.05 / $0.25 |
claude-sonnet-5-5 |
1M | 128K | $2 | $10 | $0.1 | $1 / $5 |
claude-opus-5-5 |
1M | 128K | $4 | $20 | $0.2 | $2 / $10 |
claude-fable-5-1 |
1M | 128K | $10 | $50 | $0.25 | $5 / $25 |
claude-opus-5 |
1M | 128K | $5 | $25 | $0.5 | $2.5 / $12.5 |
claude-sonnet-5 |
1M | 128K | $2 | $10 | $0.2 | $1 / $5 |
claude-fable-5 |
1M | 128K | $10 | $50 | $1 | $5 / $25 |
claude-opus-4-8 |
1M | 128K | $5 | $25 | $0.5 | $2.5 / $12.5 |
claude-opus-4-7 |
1M | 128K | $5 | $25 | $0.5 | $2.5 / $12.5 |
claude-sonnet-4-6 |
1M | 128K | $3 | $15 | $0.3 | $1.5 / $7.5 |
claude-opus-4-6 |
1M | 128K | $5 | $25 | $0.5 | $2.5 / $12.5 |
claude-opus-4-5-20251101 |
200K | 64K | $5 | $25 | $0.5 | $2.5 / $12.5 |
claude-haiku-4-5-20251001 |
200K | 64K | $1 | $5 | $0.1 | $0.5 / $2.5 |
claude-sonnet-4-5-20250929 |
200K | 64K | $3 | $15 | $0.3 | $1.5 / $7.5 |
Notes:
- Ids of the current generation have no date suffix. The 4.5 models keep one;
claude-opus-4-5,claude-sonnet-4-5,claude-haiku-4-5are accepted aliases in the scripts. claude-haiku-5-5switches to $0.50 / $2.50 when the prompt exceeds 100K tokens.- Cache writes cost 1.25× input (5 minutes) or 2× input (1 hour).
- Fast mode prices:
claude-fable-5-2$16 / $80,claude-opus-5-5$8 / $40,claude-opus-5$10 / $50,claude-opus-4-8$10 / $50. claude-sonnet-4-5-20250929returned a deprecation warning: end-of-life 2026-11-30.- Never write a model id from memory. Run
node scripts/claude-api.mjs models, or call the Models API.