Claude Opus 5vsClaude Opus 4.8
Across 5 shared benchmarks, Claude Opus 5 leads overall: Claude Opus 5 wins 5, Claude Opus 4.8 wins 0, with 0 ties and an average score difference of +8.10.
Claude Opus 5
Anthropic · 2026-07-24 · Reasoning model
Claude Opus 4.8
Anthropic · 2026-05-28 · Reasoning model
Claude Opus 55 wins(100%)(0%)0 winsClaude Opus 4.8
Benchmark scores
Grouped by capability, sorted by largest gap within each. 5 shared benchmarks.
Coding and Software Engineer
Claude Opus 5 3/3| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| SWE-Bench Pro - Public | 79.202 / 54Max (With Tools) | 69.204 / 54Extended (with tools) | +10 |
| DeepSWE | 68.804 / 19Max (With Tools) | 598 / 19Deep Thinking (With Tools) | +9.80 |
| SWE-bench Verified | 961 / 112Max (With Tools) | 88.605 / 112Extended (with tools) | +7.40 |
AI Agent - Information Search
Claude Opus 5 1/1| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| BrowseComp | 90.802 / 53Max (With Tools + Internet) | 84.309 / 53Thinking High (With Tools + Internet) | +6.50 |
General Knowledge
Claude Opus 5 1/1| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| HLE | 64.701 / 172Max (With Tools) | 57.907 / 172Extended (with tools) | +6.80 |
Specs
| Field | Claude Opus 5 | Claude Opus 4.8 |
|---|---|---|
| Publisher | Anthropic | Anthropic |
| Release date | 2026-07-24 | 2026-05-28 |
| Model type | Reasoning model | Reasoning model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 1M | 1M |
| Max output | 128K | 125K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | Claude Opus 5 | Claude Opus 4.8 |
|---|---|---|
| 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 5leads in:Coding and Software Engineer (3/3), AI Agent - Information Search (1/1), General Knowledge (1/1)
On average across the 5 shared benchmarks, Claude Opus 5 scores 8.10 higher.
Largest single-benchmark gap: SWE-Bench Pro - Public — Claude Opus 5 79.20 vs Claude Opus 4.8 69.20 (+10).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.