Claude 4 Opus vs o3 Pro
API pricing, context window and capabilities for Claude 4 Opus and o3 Pro, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersClaude 4 Opus wins on price. o3 Pro wins on intelligence. Benchmark data is unavailable for one or both models.
Price
Claude 4 Opus
Terminal-Bench
Not called
Intelligence
o3 Pro
Context window
Tied
Key takeaways
who wins on what, from the published numbersClaude 4 Opus wins
- Cheaper input ($5.00 vs $20.00 /1M)
- Cheaper output ($25.00 vs $80.00 /1M)
- Higher max output (200K vs 100K)
- More serving providers (3 vs 2)
- Supports prompt caching
o3 Pro wins
- Has web search
Cheaper overall
Claude 4 Opus
$5.00 + $25.00 /1M
Larger context
Tied
More providers
Claude 4 Opus
3 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. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.
| Claude 4 Opus | o3 Pro | |
|---|---|---|
| Input $/1M | $5.00via Snowflake best | $20.00OpenRouter routed quote |
| Output $/1M | $25.00via Snowflake best | $80.00OpenRouter routed quote |
| Context window | 200K | 200K |
| Max output | 200K best | 100K |
| Serving providers | 3 best | 2 |
| Date | First listed Jul 2025 | Released Jun 10, 2025 |
Benchmarks
Benchmark scores, side by side| Claude 4 Opus | o3 Pro | |
|---|---|---|
| Intelligence | 16.6 | 21.9 best |
| GPQA Diamond | 70% | 85% best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude 4 Opus
via Snowflake
$50
o3 Pro
via OpenRouter
$180
Capabilities
feature support, side by side| Feature | Claude 4 Opus | o3 Pro |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | — |
| Structured output | ✓ | ✓ |
| Web search | — | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, Claude 4 Opus or o3 Pro?
Claude 4 Opus is cheaper for input ($5.00 vs $20.00 per 1M tokens) from Snowflake. Claude 4 Opus is cheaper for output ($25.00 vs $80.00 per 1M tokens) from Snowflake.
What is the context window difference between Claude 4 Opus and o3 Pro?
Both Claude 4 Opus and o3 Pro have about a 200K-token context window.
How do Claude 4 Opus and o3 Pro compare on benchmarks?
On the tracked benchmarks, o3 Pro leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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