Claude Opus 4.5 vs Claude Opus 4.6
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
by Anthropic
|
by Anthropic
|
|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | May 22, 2025 | Feb 5, 2026 |
| Pricing per million tokens | ||
| Input | $5.00/Mtok | $5.00/Mtok |
| Output | $25.00/Mtok | $25.00/Mtok |
| Blended avg | $10.00/Mtok | $10.00/Mtok |
| Cached input | $0.500/Mtok | $0.500/Mtok |
| Specifications | ||
| Context window | 200K tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Benchmarks source: Vellum LLM Leaderboard | ||
| Avg benchmark score | 70.9 | 76.7 |
| Perf / dollar | 7.1 | 7.7 |
| GPQA Diamond | 87 | 91.3 |
| Terminal-Bench 2.1 | 59.3 | 65.4 |
| MCP Atlas | 69.8 | 76.8 |
| ARC-AGI 2 | 37.6 | 68.8 |
| MMMLU | 90.8 | 91.1 |
| HumanEval | 80.9 | 80.8 |
| LiveCodeBench | — | 76 |
| Humanity's Last Exam | — | 40 |
| AIME 2025 | — | 99.8 |
| AIME 2026 | 95.1 | — |
| Independent composite scores each on its own scale — not part of the average above | ||
| LMSYS Chatbot Arena | — | 1497.4 ELO |
| Providers | ||
| Available from |
Anthropic — $5.00/$25.00/Mtok
|
Anthropic — $5.00/$25.00/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | Claude Opus 4.5 | Claude Opus 4.6 | Savings |
|---|---|---|---|
| 1M tokens | $10 | $10 | $0 (0%) |
| 10M tokens | $100 | $100 | $0 (0%) |
| 100M tokens | $1000 | $1000 | $0 (0%) |
| 1000M tokens | $10000 | $10000 | $0 (0%) |
When to pick which
distilled from the pricing and spec data above- this pairing gives Claude Opus 4.5 no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
- you need the longer context: 1M tokens vs 200K (5×)
- raw capability matters more than price: 76.7 vs 70.9 average benchmark score
The cheaper option here — Claude Opus 4.5 costs $10.00/Mtok blended on Anthropic.
Summary
Claude Opus 4.5 by Anthropic costs $5.00/Mtok input and $25.00/Mtok output, with a 200K-token context window. It supports text, image input.
Claude Opus 4.6 by Anthropic costs $5.00/Mtok input and $25.00/Mtok output, with a 1M-token context window. It supports text, image input.
On benchmarks, Claude Opus 4.6 scores higher (76.7 vs 70.9) on average. In terms of value, Claude Opus 4.6 has better performance per dollar (7.7 vs 7.1).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.