Compare / head-to-head
Claude Haiku 4.5vsClaude Sonnet 4
Claude Sonnet 4 leads 2 of 3 shared benchmarks. Claude Haiku 4.5 is 3x cheaper per token. Both offer a 200K-token context window.
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 2
Claude Sonnet 4 leads
Cheaper per token
Claude Haiku 4.5
3x cheaper, input + output
Larger context
Tie
both 200K tokens
Provider uptime (30d)
100%
Anthropic
Claude Haiku 4.5
Anthropic · released 2025-10-15
textvision
Claude Sonnet 4
Anthropic · released 2025-05-22
textvision
Quality
Benchmark matrix
3 shared · 1 only Claude Haiku 4.5 · 1 only Claude Sonnet 4| Benchmark | Claude Haiku 4.5 | Claude Sonnet 4 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| SWE-bench Verified | 73.3% ↗ | 72.7% ↗ | +0.6 pt | Claude Haiku 4.5 |
| GPQA Diamond | 71.2% ↗epoch | 79.2% ↗epoch | -8 pt | Claude Sonnet 4 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 66.7% ↗epoch | 71.1% ↗epoch | -4.4 pt | Claude Sonnet 4 |
| Only Claude Haiku 4.5 reports · 1 | ||||
| SimpleQA Verified | 13.2% ↗epoch | not reported | — | — |
| Only Claude Sonnet 4 reports · 1 | ||||
| AIME 2024 (no extended thinking) | not reported | 33.1% ↗ | — | — |
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 Sonnet 4 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 Sonnet 4 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 200K tokens | Tie |
| Max output | 64K tokens | 64K tokens | Tie |
| Input price / 1M | $1 ↗ | $3 ↗ | Claude Haiku 4.5 |
| Output price / 1M | $5 ↗ | $15 ↗ | Claude Haiku 4.5 |
| Cached input / 1M | $0.1 ↗ | $0.3 ↗ | Claude Haiku 4.5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $6 | $18 | Claude Haiku 4.5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-10-15 | 2025-05-22 | — |
| Cited benchmark scores | 4 | 4 | — |
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 Sonnet 4 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 Sonnet 4 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.