Claude Opus 4.5 vs Gemini 3 Pro
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Claude Opus 4.5
Anthropic · Nov 2025
The November 2025 Opus that cut flagship pricing 3x to $5/$25 and was the first model past 80% on SWE-bench Verified.
Gemini 3 Pro
73.6Google · Nov 2025
Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.
The verdict
Claude Opus 4.5 wins 2 of the 3 benchmarks these models share, against 1 for Gemini 3 Pro. Gemini 3 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix). Gemini 3 Pro also takes 1M of context versus 200K for Claude Opus 4.5.
Benchmark head-to-head 2–1
Specs & pricing
| Claude Opus 4.5 | Gemini 3 Pro | |
|---|---|---|
| modhub Index | — | 73.6 |
| Input price / 1M | $5 | $2 |
| Output price / 1M | $25 | $12 |
| Context window | 200K | 1M |
| Max output | 64K | 66K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image, audio, video |
| Knowledge cutoff | Mar 2025 | Jan 2025 |
| Released | Nov 2025 | Nov 2025 |
| Example monthly cost* | $87.50 | $38.00 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Claude Opus 4.5 or Gemini 3 Pro?
- Claude Opus 4.5 wins 2 of the 3 benchmarks these models share, against 1 for Gemini 3 Pro. Gemini 3 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix). Gemini 3 Pro also takes 1M of context versus 200K for Claude Opus 4.5.
- Which is cheaper, Claude Opus 4.5 or Gemini 3 Pro?
- Claude Opus 4.5 costs $5/$25 per million input/output tokens, while Gemini 3 Pro costs $2/$12. For a typical workload of 10M input and 1.5M output tokens per month, that's $87.50 versus $38.00.
- Which model is better for coding, Claude Opus 4.5 or Gemini 3 Pro?
- On SWE-bench Verified — the standard agentic-coding benchmark — Claude Opus 4.5 scores 80.9% versus 76.2% for Gemini 3 Pro, making Claude Opus 4.5 the stronger pick for coding agents.
More comparisons
Claude Opus 4.5 vs GPT-5.5Gemini 3 Pro vs GPT-5.5Claude Opus 4.5 vs GPT-5.2Gemini 3 Pro vs GPT-5.2Claude Opus 4.5 vs GPT-5.1Gemini 3 Pro vs GPT-5.1Claude Opus 4.5 vs GPT-5Gemini 3 Pro vs GPT-5Claude Opus 4.5 vs GPT-5 miniGemini 3 Pro vs GPT-5 miniClaude Opus 4.5 vs OpenAI o3Gemini 3 Pro vs OpenAI o3