Claude Opus 4.6vsOpus 4.5
Across 14 shared benchmarks, Claude Opus 4.6 leads overall: Claude Opus 4.6 wins 11, Opus 4.5 wins 3, with 0 ties and an average score difference of +17.34.
Claude Opus 4.6
Anthropic · 2026-02-05 · Reasoning model
Opus 4.5
Anthropic · 2025-11-25 · Reasoning model
Claude Opus 4.611 wins(79%)(21%)3 winsOpus 4.5
Benchmark scores
Grouped by capability, sorted by largest gap within each. 14 shared benchmarks.
Agent Level Benchmark
Claude Opus 4.6 2/3| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| τ²-Bench | 91.891 / 44Extended (with tools) | 81.9913 / 44Extended (with tools) | +9.90 |
| Terminal Bench Hard | 48.5025 / 244Normal (With Tools) | 40.9050 / 244Normal (With Tools) | +7.60 |
| τ²-Bench - Telecom | 84.8090 / 264Normal (With Tools) | 86.3082 / 264Normal (With Tools) | -1.50 |
Coding and Software Engineer
Claude Opus 4.6 2/3| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| Text Arena (Coding) | 1,5558 / 35Normal (No Tools) | 1,47920 / 35Normal (No Tools) | +76.35 |
| GSO | 33.335 / 21Normal (With Tools) | 26.508 / 21Normal (With Tools) | +6.83 |
| SWE-bench Verified | 80.8410 / 116Extended (with tools) | 80.909 / 116Extended (with tools) | -0.06 |
General Knowledge
Claude Opus 4.6 2/2| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| ARC-AGI-1 | 9240 / 147Extended (no tools) | 8073 / 147Extended (no tools) | +12 |
| CritPt | 2.80120 / 200Normal (No Tools) | 0.30182 / 200Normal (No Tools) | +2.50 |
AI Agent - Tool Usage
Claude Opus 4.6 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| Terminal Bench 2.0 | 65.4011 / 48Extended (with tools) | 59.3020 / 48Extended (with tools) | +6.10 |
General Evaluation
Claude Opus 4.6 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| GPQA Diamond | 84176 / 462Normal (No Tools) | 81220 / 462Normal (No Tools) | +3 |
Instruction Following
Claude Opus 4.6 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| IF Bench | 44.60182 / 282Normal (No Tools) | 43194 / 282Normal (No Tools) | +1.60 |
Long Context
Opus 4.5 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| AA-LCR | 67116 / 170Normal (No Tools) | 70.7099 / 170Normal (No Tools) | -3.70 |
Multimodal Understanding
Claude Opus 4.6 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| MMMU-Pro | 72.50114 / 227Normal (No Tools) | 71.20120 / 227Normal (No Tools) | +1.30 |
Writing and Creative Capabilities
Claude Opus 4.6 1/1| Benchmark | Claude Opus 4.6 | Opus 4.5 | Diff |
|---|---|---|---|
| Creative Writing | 1,80419 / 106Normal (No Tools) | 1,68329 / 106Normal (No Tools) | +120.90 |
Specs
| Field | Claude Opus 4.6 | Opus 4.5 |
|---|---|---|
| Publisher | Anthropic | Anthropic |
| Release date | 2026-02-05 | 2025-11-25 |
| Model type | Reasoning model | Reasoning model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 1000K | 200K |
| Max output | 64K | 64K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | Claude Opus 4.6 | Opus 4.5 |
|---|---|---|
| Text input | $5 / 1M tokens | $5 / 1M tokens |
| Text output | $25 / 1M tokens | $25 / 1M tokens |
| Cache read | $0.5 / 1M tokens | $0.5 / 1M tokens |
| Cache write | $6.25 / 1M tokens | $6.25 / 1M tokens |
Summary
- Claude Opus 4.6leads in:Agent Level Benchmark (2/3), Coding and Software Engineer (2/3), General Knowledge (2/2), AI Agent - Tool Usage (1/1), General Evaluation (1/1), Instruction Following (1/1), Multimodal Understanding (1/1), Writing and Creative Capabilities (1/1)
- Opus 4.5leads in:Long Context (1/1)
On average across the 14 shared benchmarks, Claude Opus 4.6 scores 17.34 higher.
Largest single-benchmark gap: Creative Writing — Claude Opus 4.6 1,804 vs Opus 4.5 1,683 (+120.90).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.