ModelRefs / Claude 3.5 Haiku vs Claude 3 Opus
Claude 3.5 Haiku vs Claude 3 Opus
Claude 3.5 Haiku vs Claude 3 Opus: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
Claude 3.5 Haiku: Claude 3.5 Haiku is Anthropic's fast, low-cost model from late 2024, built for high-volume work such as classification, extraction and routing across a 200,000-token context window. The claude-3-5-haiku-20241022 snapshot was deprecated on 19 December 2025 and retired on Anthropic-operated platforms on 19 February 2026, with Claude Haiku 4.5 named as its replacement.
Claude 3 Opus: Claude 3 Opus is Anthropic's February 2024 frontier model and the most capable of the original Claude 3 family, accepting text and image input across a 200,000-token context window. The claude-3-opus-20240229 snapshot was deprecated on 30 June 2025 and retired on Anthropic-operated platforms on 5 January 2026, with Claude Opus 4.8 named as its replacement.
Context window: Claude 3.5 Haiku accepts up to 200,000 tokens, Claude 3 Opus up to 200,000. Confirm the limit for your specific deployment channel before relying on it.
Claude 3.5 Haiku vs Claude 3 Opus at a glance
| Attribute | Claude 3.5 Haiku | Claude 3 Opus |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Released | 2024-11-04 | 2024-02-29 |
| Context window | 200,000 tokens | 200,000 tokens |
| Input price | $0.8/M tokens | $15/M tokens |
| Output price | $4/M tokens | $75/M tokens |
| Licence | Proprietary | Proprietary |
| Self-hostable | No, hosted only | No, hosted only |
| Modalities | text | text, vision |
Benchmarks reported for both
| Benchmark | Claude 3.5 Haiku | Claude 3 Opus | Reported |
|---|---|---|---|
| GPQA Diamond (accuracy) | 41.6 | 50.4 | 2024-03-04 |
Each row compares the same benchmark, the same reported metric, and the same task set. Scores are as published by their cited sources on the dates shown. Different runs still use different harnesses and prompts, so treat these as directional evidence rather than a head-to-head result.
Where they differ most
- Reasoning: Claude 3.5 Haiku 25%, Claude 3 Opus 38%. Claude 3 Opus leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Claude 3.5 Haiku vs Claude 3 Opus.
Frequently asked questions
Which is better, Claude 3.5 Haiku or Claude 3 Opus?
Claude 3.5 Haiku and Claude 3 Opus target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is Claude 3.5 Haiku cheaper than Claude 3 Opus?
Compare $0.00080 vs $0.0150 on this page.