Claude Opus vs Gemini Pro
Two different bets. Opus 5 is the agentic specialist — it holds a task together over many steps. Gemini 3.1 Pro leads reasoning benchmarks and costs meaningfully less per token at the frontier tier. Both carry a million-token context, so the old 'Gemini for long inputs' advantage has largely evaporated.
| Claude Opus | Gemini Pro | |
|---|---|---|
| Provider | Anthropic | |
| Current release | Opus 5 | 3.1 Pro |
| Tier | Frontier | Frontier |
| Context | 1M | 1M |
| Cost | Premium | Moderate |
| Modalities | text, vision | text, vision, audio |
| Open weights | No | No |
Cost is a tier, not a quote — providers change prices often. Check Anthropic and Google before you commit. Last updated 2026-08-14.
Which one to pick
Claude OpusAnthropic · Opus 5
Agentic coding and multi-step engineering work — near the ceiling, at half the price
Reach for it when- Agent loops that call tools repeatedly and must not drift
- Code that has to match an existing house style
Gemini ProGoogle · 3.1 Pro
Reasoning over very long inputs — whole codebases, long documents, video
Reach for it when- Hard reasoning problems where you want the benchmark leader
- Cost-sensitive frontier work — it is the cheaper of the two
- Video and audio reasoning in the same request
Related comparisons
- Claude Opus vs GPT-5.6 SolThe headline matchup, and closer than either vendor's marketing suggests.
- GPT-5.6 Sol vs Gemini ProSol is the stronger all-round generalist; Gemini 3.1 Pro is the better value and the reasoning-benchmark leader.
- Claude Opus vs GrokBoth are pitched at agentic coding.
- Gemini Pro vs GrokSimilar price band, different shapes.
- Claude Sonnet vs Gemini ProA tier-crossing comparison people make on price.
- Claude Fable vs Claude OpusThe within-Claude question.