Listed in Models
Anthropic's daily-driver flagship, #1 on Artificial Analysis. Pricing, the evidence and the alternatives, checked Oct 2026.
Closed model. No public weights; API only.
Anthropic's daily-driver flagship, #1 on Artificial Analysis.
Claude Opus 5.5: Anthropic's daily-driver flagship, #1 on Artificial Analysis. Best for agentic coding, careful writing and long multi-step work. Watch out for: pricier per token than gemini or gpt flagships; max-effort runs get slow and expensive. Price: $4 in / $20 out per 1M tokens (no free tier, checked Oct 2026).
| Free tier | No free plan |
|---|---|
| Job in a stack | AI model, closed model (API only) |
| Cheapest paid plan | API: $4 in / $20 out per 1M tokens |
| Price checked | 2026-10-15, verified |
Whole scores from 1 to 5, mapped from the source shown. “Not rated” means we found no public benchmark for that job; “not supported” means the model can’t do it. How the bars are scored.
| Plan | Price | Billing | Key limits |
|---|---|---|---|
| API, per 1M tokens | Per token | $4 input / $20 output per 1M tokens; prompt caching reads $0.20 | Blended about $8.00 per 1M tokens (3 parts input to 1 part output) |
From anthropic.com/pricing, checked 2026-10-15, verified. Prices are before tax and vendors change them often.
| Type | Source | Result | Date |
|---|---|---|---|
| benchmark | LMArena Text | #3 (claude-opus-5.5-high) | 2026-10-15 |
| benchmark | LMArena Coding | #6 (claude-opus-5.5-high) | 2026-10-15 |
| benchmark | LMArena Creative Writing | #1 (claude-opus-5.5-high) | 2026-10-15 |
| benchmark | Artificial Analysis Intelligence Index | 58 (Claude Opus 5.5 (max)) | 2026-10-15 |
Our scores: quality 5/5, ease 3/5, value 2.5/5. Editorial start 5/3; benchmark adjustment +0.2, rating adjustment +0. How we rank.
No free tier. Cheapest paid plan: $4 in / $20 out per 1M tokens (checked Oct 2026).
Agentic coding, careful writing and long multi-step work.
Pricier per token than Gemini or GPT flagships; max-effort runs get slow and expensive.