Pairwise benchmark snapshot · Aug 16, 2026
This page compares Claude Haiku 4.5 (Anthropic) and Claude Opus 4 (Anthropic) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4 is ahead by 52 points (1,490 vs 1,438; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Claude Opus 4 resolves 72.5% versus 58.2% (seed-bootstrap (Aug 1, 2026)). Claude Haiku 4.5 streams faster (175 tok/s) while Claude Haiku 4.5 is the cheaper output token ($5/1M). Claude Haiku 4.5 has the larger context window (200k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.
Anthropic
Claude Haiku 4.5Anthropic cheap/fast Claude SKU. Official Claude Platform list price $1/$5 per 1M tokens (Anthropic Haiku page).
Anthropic
Claude Opus 4First Claude 4 Opus generation. Baseline for opus 4 vs opus 5.
Instant pairwise benchmark recalculation across 400+ LLMs
Category wins across intelligence, speed, and pricing efficiency.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
52 pts advantage
117 tok/s faster
$70.00/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Claude Haiku 4.5 is estimated to save $1,540.00/month ($18,480/year).
Higher SWE-bench (72.5%).
Lower output list price ($5/1M).
Lower TTFT (95 ms).
Larger window (200k).
Both accept images. Defaulting to the higher-Elo side (Claude Opus 4).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4 | Higher SWE-bench (72.5%). |
| High-volume chat | Claude Haiku 4.5 | Lower output list price ($5/1M). |
| Voice / low-latency UI | Claude Haiku 4.5 | Lower TTFT (95 ms). |
| Long-document RAG | Claude Haiku 4.5 | Larger window (200k). |
| Screenshots / vision | Claude Opus 4 | Both accept images. Defaulting to the higher-Elo side (Claude Opus 4). |
$1/$5 hosted Claude vs a cheap long-context open sibling. The alternative-to-Sonnet pair that is honest.
Huge window, cheap hosted lists. The Haiku alternative that is actually open-weight.
Official Anthropic list $1/$5. This is the SKU behind “cheapest Claude alternative” that is still Claude.
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The real PNG is generated at /compare/claude-haiku-4-5-vs-claude-opus-4/opengraph-image for crawlers.
Verified head-to-head card
