Pairwise benchmark snapshot · Aug 16, 2026
This page compares Claude Opus 4.6 (Anthropic) and GPT-5 mini (OpenAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4.6 is ahead by 164 points (1,574 vs 1,410; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Claude Opus 4.6 resolves 75.9% versus 52.4% (seed-bootstrap (Aug 1, 2026)). GPT-5 mini streams faster (155 tok/s) while GPT-5 mini is the cheaper output token ($2/1M). 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.
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.
164 pts advantage
91 tok/s faster
$23.00/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
GPT-5 mini is estimated to save $511.25/month ($6,135/year).
Higher SWE-bench (75.9%).
Lower output list price ($2/1M).
Lower TTFT (140 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.6).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4.6 | Higher SWE-bench (75.9%). |
| High-volume chat | GPT-5 mini | Lower output list price ($2/1M). |
| Voice / low-latency UI | GPT-5 mini | Lower TTFT (140 ms). |
| Long-document RAG | Claude Opus 4.6 | Larger window (1M). |
| Screenshots / vision | Claude Opus 4.6 | Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.6). |
Slightly behind 4.5 on one official SWE-bench sweep; stronger long-horizon traces. We keep the row for old vs URLs.
High-volume agents that cannot pay Sol. Compare to Luna before you assume the new cheap SKU wins.
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Verified head-to-head card
