Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Claude 3 Opus | o1-preview |
|---|---|---|
| Input ($/M tokens) | $15 | $16.5 |
| Output ($/M tokens) | $75 | $66 |
Verdict. o1-preview takes the aggregate benchmark matchup 2–0 across 2 categories. Real workloads usually care about a handful of specific tasks — see the per-benchmark table above.
Pricing. Both models sit in the premium bracket for output-token pricing. At 1.1× the per-million-token cost, o1-preview is meaningfully cheaper if your traffic is output-heavy (long completions, document generation, agent loops). o1-preview makes more sense when output volume is low and absolute reasoning quality justifies the premium.
Strengths. Claude 3 Opus is strongest on Coding Index (19.5), Intelligence Index (11.8). o1-preview leads on Coding Index (34.0), Intelligence Index (17.2).
Speed. Speed data is incomplete for this pair; benchmark and price should decide.
Provider. Anthropic and OpenAI sell to overlapping but distinct developer audiences: Anthropic tends to ship frontier reasoning models with premium positioning, while OpenAI often prices more aggressively. Your existing vendor relationships, billing, and SLA preferences may matter as much as the raw numbers above.
Workload cost. Workload scenarios (per million requests at 30M input + 15M output tokens): Claude 3 Opus costs $1575.00 ($18900/year); o1-preview costs $1485.00 ($17820/year). At a smaller 5M-input/2M-output scale (single-developer tool or prototype): Claude 3 Opus ≈ $225.00/run, o1-preview ≈ $214.50/run. At agent/realtime scale (200M input / 100M output per million requests): Claude 3 Opus ≈ $10500/run, o1-preview ≈ $9900/run. o1-preview becomes more attractive at higher volume — the absolute per-token pricing difference compounds when you ship at scale.
Recommendation. Both models have legitimate use cases — the right answer depends on whether you are optimizing for benchmark ceiling, latency, or unit cost. Start with the cheaper / faster model, evaluate against your specific task, and only switch if the upgrade shows a meaningful lift.
Data from Artificial Analysis API — 12 benchmarks
o1-preview is cheaper overall. Its blended price (3:1 input/output ratio) is $28.88/M tokens vs $30.00/M for Claude 3 Opus.
o1-preview wins 2 out of 12 benchmarks compared to 0 for Claude 3 Opus. See the detailed benchmark chart above for per-category results.
Both models have comparable generation speeds.
Choose based on your priorities: o1-preview for lower cost, o1-preview for stronger benchmark performance, and both have comparable speed. For latency-sensitive apps, check the TTFT comparison above.