Compare / head-to-head
Claude Haiku 4.5vsClaude Opus 4.8
Claude Opus 4.8 leads 4 of 4 shared benchmarks. Claude Haiku 4.5 is 5x cheaper per token. Claude Opus 4.8 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 4
Claude Opus 4.8 leads
Cheaper per token
Claude Haiku 4.5
5x cheaper, input + output
Larger context
Claude Opus 4.8
1M tokens
Provider uptime (30d)
100%
Anthropic
Claude Haiku 4.5
Anthropic · released 2025-10-15
textvision
Claude Opus 4.8
Anthropic · released 2026-05-28
textvision
Quality
Benchmark matrix
4 shared · 0 only Claude Haiku 4.5 · 12 only Claude Opus 4.8| Benchmark | Claude Haiku 4.5 | Claude Opus 4.8 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| SWE-bench Verified | 73.3% ↗ | 88.6% ↗ | -15.3 pt | Claude Opus 4.8 |
| GPQA Diamond | 71.2% ↗epoch | 93.6% ↗ | -22.4 pt | Claude Opus 4.8 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 66.7% ↗epoch | 98.3% ↗epoch | -31.6 pt | Claude Opus 4.8 |
| SimpleQA Verified | 13.2% ↗epoch | 53% ↗epoch | -39.8 pt | Claude Opus 4.8 |
| Only Claude Haiku 4.5 reports · 0 | ||||
| Claude Haiku 4.5 reports nothing Claude Opus 4.8 does not. | ||||
| Only Claude Opus 4.8 reports · 12 | ||||
| AIME 2026 | not reported | 100% ↗matharena ⚠ | — | — |
| Humanity's Last Exam (no tools) | not reported | 49.8% ↗ | — | — |
| LMArena Elo | not reported | 1452.7 ↗ | — | — |
| BrowseComp | not reported | 84.3% ↗ | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 56.1% ↗epoch | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 80% ↗epoch | — | — |
| Humanity's Last Exam (with tools) | not reported | 57.9% ↗ | — | — |
| OSWorld-Verified | not reported | 83.4% ↗ | — | — |
| SWE-bench Multilingual | not reported | 84.4% ↗ | — | — |
| SWE-bench Multimodal | not reported | 38.4% ↗ | — | — |
| SWE-Bench Pro | not reported | 69.2% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 74.6% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Haiku 4.5 minus Claude Opus 4.8 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Haiku 4.5 | Claude Opus 4.8 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 1M tokens | Claude Opus 4.8 |
| Max output | 64K tokens | 128K tokens | Claude Opus 4.8 |
| Input price / 1M | $1 ↗ | $5 ↗ | Claude Haiku 4.5 |
| Output price / 1M | $5 ↗ | $25 ↗ | Claude Haiku 4.5 |
| Cached input / 1M | $0.1 ↗ | $0.5 ↗ | Claude Haiku 4.5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $6 | $30 | Claude Haiku 4.5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-10-15 | 2026-05-28 | — |
| Cited benchmark scores | 4 | 17 | — |
Reliability
Anthropic status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Haiku 4.5 vs …
Models sharing the most benchmarksMore matchups
Claude Opus 4.8 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Claude Haiku 4.5 and Claude Opus 4.8 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.