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 2026-09-04.
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 AstraThe practical version of the frontier question, because Opus 5 costs half what Astra does, $5 and $25 per million tokens against $10 and $50, and Anthropic recommends it as the default for most workloads.
- GPT Astra vs Gemini ProA five-fold price gap between two frontier models.
- Claude Opus vs GPT SolTwo mid-frontier models at almost the same price, now that GPT-6 Astra sits above Sol and Claude Fable 5.1 sits above Opus.
- GPT 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.