Claude Opus 4.6 vs Claude Opus 4.8
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Opus 4.6 and Claude Opus 4.8.
Claude Opus 4.6
Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...
Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...
Technical Specifications
| Specification | Claude Opus 4.6 | Claude Opus 4.8 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context Window | 1,000,000 tokens | 1,000,000 tokens |
| Agent Suitability | 95/100 | 97/100 |
| Time to First Token (TTFT) | 500 ms | 520 ms |
| Deployment Model | managed api | managed api |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2026-02-04 | 2026-05-27 |
API Pricing Comparison
Input Price per Million Tokens
Claude Opus 4.6
$5.00
Claude Opus 4.8
$5.00
Output Price per Million Tokens
Claude Opus 4.6
$25.00
Claude Opus 4.8
$25.00
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Opus 4.6 Quirks & Gotchas
- ▸Best for long-context document analysis and legal review
- ▸Tool calling requires structured prompt — prone to verbose refusal without explicit output schema
Claude Opus 4.8 Quirks & Gotchas
- ▸Best-in-class for autonomous code repair and multi-agent orchestration
- ▸Preview model — API may introduce breaking changes without notice