Pairwise benchmark snapshot · Aug 16, 2026
This page compares Claude Opus 4.8 (Anthropic) and Gemini 3 Pro (Google) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4.8 is ahead by 46 points (1,598 vs 1,552; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Opus 4.8 resolves 78.4% versus 72.4% (seed-bootstrap (Aug 16, 2026)). Gemini 3 Pro streams faster (92 tok/s) while Gemini 3 Pro is the cheaper output token ($5/1M). Gemini 3 Pro has the larger context window (2M 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 4.8Prior Opus generation still billed at $5/$25. Kept as a compare baseline against Opus 5.
Google frontier multimodal model with a multi-million-token context window.
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.
46 pts advantage
26 tok/s faster
$20.00/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Gemini 3 Pro is estimated to save $431.25/month ($5,175/year).
Higher SWE-bench (78.4%).
Lower output list price ($5/1M).
Lower TTFT (220 ms).
Larger window (2M).
Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.8).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4.8 | Higher SWE-bench (78.4%). |
| High-volume chat | Gemini 3 Pro | Lower output list price ($5/1M). |
| Voice / low-latency UI | Gemini 3 Pro | Lower TTFT (220 ms). |
| Long-document RAG | Gemini 3 Pro | Larger window (2M). |
| Screenshots / vision | Claude Opus 4.8 | Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.8). |
Opus 4.8 still bills $5/$25. We keep it so Opus 5 vs 4.8 is a real generation delta, not marketing.
March 2026 Google frontier multimodal with a 2M window. 3.6 Pro is newer; 3 Pro stays as the original 3.x Pro row.
No comments posted on this matchup yet. Be the first to share an evaluation note!
The real PNG is generated at /compare/claude-opus-4-8-vs-gemini-3-pro/opengraph-image for crawlers.
Verified head-to-head card
