Claude Opus 5vsClaude Opus 4.8
Across 7 shared benchmarks, Claude Opus 5 leads overall: Claude Opus 5 wins 7, Claude Opus 4.8 wins 0, with 0 ties and an average score difference of +54.19.
Claude Opus 5
Anthropic · 2026-07-24 · Reasoning model
Claude Opus 4.8
Anthropic · 2026-05-28 · Reasoning model
Claude Opus 57 wins(100%)(0%)0 winsClaude Opus 4.8
Benchmark scores
Grouped by capability, sorted by largest gap within each. 7 shared benchmarks.
AI Agent - Tool Usage
Claude Opus 5 2/2| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| Terminal-Bench 4.0 | 51.823 / 13Max (With Tools) | 23.647 / 13Max (With Tools) | +28.18 |
| Terminal-Bench-Science 0.1 | 303 / 11Max (With Tools) | 10.506 / 11Max (With Tools) | +19.50 |
Math and Reasoning
Claude Opus 5 2/2| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| FrontierMath Tier 4 v2 | 73.176 / 42Max (No Tools) | 56.1011 / 42Max (No Tools) | +17.07 |
| FrontierMath v2 | 85.615 / 58Max (No Tools) | 809 / 58Max (No Tools) | +5.61 |
Coding and Software Engineer
Claude Opus 5 1/1| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| WeirdML v2 | 86.344 / 52Normal (With Tools) | 70.4518 / 52Normal (With Tools) | +15.89 |
Text Embedding
Claude Opus 5 1/1| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| Context Arena | 97.721 / 126Max (No Tools) | 90.0415 / 126Max (No Tools) | +7.68 |
Writing and Creative Capabilities
Claude Opus 5 1/1| Benchmark | Claude Opus 5 | Claude Opus 4.8 | Diff |
|---|---|---|---|
| Creative Writing | 2,1213 / 106Normal (No Tools) | 1,83515 / 106Normal (No Tools) | +285.40 |
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:AI Agent - Tool Usage (2/2), Math and Reasoning (2/2), Coding and Software Engineer (1/1), Text Embedding (1/1), Writing and Creative Capabilities (1/1)
On average across the 7 shared benchmarks, Claude Opus 5 scores 54.19 higher.
Largest single-benchmark gap: Creative Writing — Claude Opus 5 2,121 vs Claude Opus 4.8 1,835 (+285.40).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.