Claude Opus 4.5 vs Claude Opus 4.6: Specs & Benchmark Comparison
| Characteristic | Claude Opus 4.5 | Claude Opus 4.6 |
|---|---|---|
| Company | Anthropic | Anthropic |
| Release Date | November 23, 2025 | February 4, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 200K | 1.0M |
| Context (output) | 64K | 128K |
| Input Price / 1M | $5.00 | $5.00 |
| Output Price / 1M | $25.00 | $25.00 |
| Average Score | 0.9 | 0.8 |
| Benchmarks | ||
| GPQA | 0.9 | 0.9 |
| SWE-Bench Verified | 0.8 | 0.8 |
| TAU2 Telecom | 1.0 | 1.0 |
Visual Benchmark Comparison
Claude Opus 4.5
Claude Opus 4.6
GPQA0.9 vs 0.9
0.9
0.9
SWE-Bench Verified0.8 vs 0.8
0.8
0.8
TAU2 Telecom1.0 vs 1.0
1.0
1.0
Verdict
Claude Opus 4.6 leads in 2 out of 5 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Opus 4.5 — 0.9, Claude Opus 4.6 — 0.8.
Programming
On SWE-Bench, both models are nearly equal: Claude Opus 4.5 — 0.8, Claude Opus 4.6 — 0.8.
API Cost
API cost is identical: input $5.00/1M, output $25.00/1M tokens.
Context Window
Claude Opus 4.6 supports a larger context: 1M vs 200K tokens.
Recency
Claude Opus 4.6 is newer: released 2/4/2026 vs 11/23/2025.
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Related Comparisons
The Claude Opus 4.5 and Claude Opus 4.6 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 4.5 or Claude Opus 4.6 page. See also the complete list of AI model comparisons.