Pairwise benchmark snapshot · Aug 16, 2026
This page compares Claude Opus 4.6 (Anthropic) and OpenAI: o3 Mini (OpenAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4.6 is ahead by 14 points (1,574 vs 1,560; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, OpenAI: o3 Mini resolves 78.5% versus 75.9% (seed-bootstrap (Aug 1, 2026)). OpenAI: o3 Mini streams faster (92 tok/s) while OpenAI: o3 Mini is the cheaper output token ($4.4/1M). Claude Opus 4.6 has the larger context window (1M 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 Opus 4.6Follow-on Opus release. Slightly behind 4.5 on official SWE-bench bash-only in the last published sweep; stronger long-horizon agent traces.
OpenAI
OpenAI: o3 MiniAuto-discovered from OpenRouter (openai/o3-mini). Preview until a second source matches.
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.
14 pts advantage
28 tok/s faster
$20.60/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
OpenAI: o3 Mini is estimated to save $445.50/month ($5,346/year).
Higher SWE-bench (78.5%).
Lower output list price ($4.4/1M).
Lower TTFT (290 ms).
Larger window (1M).
Claude Opus 4.6 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | OpenAI: o3 Mini | Higher SWE-bench (78.5%). |
| High-volume chat | OpenAI: o3 Mini | Lower output list price ($4.4/1M). |
| Voice / low-latency UI | OpenAI: o3 Mini | Lower TTFT (290 ms). |
| Long-document RAG | Claude Opus 4.6 | Larger window (1M). |
| Screenshots / vision | Claude Opus 4.6 | Claude Opus 4.6 is the side marked multimodal in the catalog. |
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