Claude Opus 5
Claude Opus 5 by Anthropic: League Score, pricing, context window and sourced benchmarks — the full tracked record.
92 Closed $5.00 / $25.00 per 1M 1M context
League positions: #5 overall · #1 Coding Division · #7 Reasoning Division · #25 Value Division. Score coverage: 90% of components measured. Count tokens & cost for Claude Opus 5 · Estimate a workload cost
Agent-ready: this model is tracked with agentic strengths. See the AI Agents section for the products and frameworks that put models like this to work.
Specifications & pricing
| Maker | Anthropic — lab profile |
| Family | Claude Opus |
| Released | Jul 24, 2026 |
| Status | Legacy |
| Weights | Closed / proprietary API |
| License | Proprietary |
| Knowledge cutoff | 2026-05 |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Modalities in | text, image |
| Modalities out | text |
| API price (input) | $5.00 per 1M tokens |
| API price (output) | $25.00 per 1M tokens |
| Cached input | $0.50 per 1M |
| Blended (3:1 in:out) | $10.00 per 1M |
| Pricing source | Official pricing page (checked Oct 14, 2026) |
| API access | Anthropic API |
Benchmark results
| Benchmark | Score | Source | Date | Link |
|---|---|---|---|---|
| GPQA Diamond | 93.2 / 100 | NextBigFuture (maker-reported) | Sep 3, 2026 | Source |
| LMArena Elo | 1522 | LMArena via Swfte snapshot | Oct 7, 2026 | Source |
| LiveBench overall | 82.1 / 100 | LiveBench | Oct 14, 2026 | Source |
| SWE-bench Verified | 96.0 / 100 | BenchLM SWE-bench leaderboard | Oct 14, 2026 | Source |
How its League Score is built
| Component | Raw | Normalised | Weight | Date | Link |
|---|---|---|---|---|---|
| LiveBench overall | 82.1 | 86.0 | 40% | Oct 14, 2026 | Source |
| SWE-bench Verified | 96.0 | 100.0 | 20% | Oct 14, 2026 | Source |
| GPQA Diamond | 93.2 | 87.8 | 15% | Sep 3, 2026 | Source |
| LMArena Elo | 1522 | 100.0 | 15% | Oct 7, 2026 | Source |
Normalised 0–100 against the tracked field; missing components redistribute their weight. Full rules on the methodology page.
Closest rivals
- Claude Opus 5 vs Gemini 4 Argon — full comparison or compare any pair
- Claude Opus 5 vs GPT-6.1 Sol — full comparison or compare any pair
- Claude Opus 5 vs Claude Opus 5.5 — full comparison or compare any pair
FAQ
How much does Claude Opus 5 cost?
Claude Opus 5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens on the first-party API (checked Oct 14, 2026).
What is the context window of Claude Opus 5?
Claude Opus 5 accepts up to 1,000,000 tokens of context.
Is Claude Opus 5 open source?
No — Claude Opus 5 is a closed model available through Anthropic’s API and products.
Data verified Oct 14, 2026. Spotted an error? Every figure above links to its source.