Claude Opus 4.5 vs Gemini 3 Pro
API pricing, context window and capabilities for Claude Opus 4.5 and Gemini 3 Pro, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGemini 3 Pro wins on price, on intelligence and on context window. Benchmark data is unavailable for one or both models.
Price
Gemini 3 Pro
Terminal-Bench
Not called
Intelligence
Gemini 3 Pro
Context window
Gemini 3 Pro
Key takeaways
who wins on what, from the published numbersClaude Opus 4.5 wins
- More serving providers (7 vs 2)
- Has reasoning mode
- Supports structured output
Gemini 3 Pro wins
- Cheaper input ($5.00 vs $2.00 /1M)
- Cheaper output ($25.00 vs $12.00 /1M)
- Larger context window (410K vs 1M)
- Higher max output (64K vs 66K)
- Supports audio
Cheaper overall
Gemini 3 Pro
$2.00 + $12.00 /1M
Larger context
Gemini 3 Pro
1M
More providers
Claude Opus 4.5
7 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
| Claude Opus 4.5 | Gemini 3 Pro | |
|---|---|---|
| Input $/1M | $5.00via Anthropic | $2.00via Replicate best |
| Output $/1M | $25.00via Anthropic | $12.00via Replicate best |
| Context window | 410K | 1M best |
| Max output | 64K | 66K best |
| Serving providers | 7 best | 2 |
| Date | Released Nov 24, 2025 | Released Nov 18, 2025 |
Benchmarks
Benchmark scores, side by side| Claude Opus 4.5 | Gemini 3 Pro | |
|---|---|---|
| Intelligence | 23.7 | 28.0 best |
| GPQA Diamond | 81% | 91% best |
| Output speed | 46 t/s | Not available |
| Latency (TTFT) | 1.09s | Not available |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude Opus 4.5
via Gmi
$50
Gemini 3 Pro
via Replicate
$22
Capabilities
feature support, side by side| Feature | Claude Opus 4.5 | Gemini 3 Pro |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | — |
| Audio | — | ✓ |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | — |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, Claude Opus 4.5 or Gemini 3 Pro?
Gemini 3 Pro is cheaper for input ($5.00 vs $2.00 per 1M tokens) from Replicate. Gemini 3 Pro is cheaper for output ($25.00 vs $12.00 per 1M tokens) from Replicate.
What is the context window difference between Claude Opus 4.5 and Gemini 3 Pro?
Claude Opus 4.5 has a 410K-token context window and Gemini 3 Pro has 1M tokens, so Gemini 3 Pro can take a larger prompt.
How do Claude Opus 4.5 and Gemini 3 Pro compare on benchmarks?
On the tracked benchmarks, Gemini 3 Pro leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
Every weekday
AI moves fast. Here's your debrief.
News, analysis, tools, and more.
For people who build with AI