o1
OpenAI • text+image+file->text
Context Window200K
Knowledge CutoffDec 17, 2024
o1 vs Claude 3 Opus
Both premium for complex reasoning — o1 wins on chain-of-thought math and code, Claude 3 Opus on broad analytical capability.
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Claude 3 Opus
Unknown • Unknown
Context WindowUnknown
Knowledge CutoffUnknown
Editorial Verdict
o1 is optimized for hard math and science; Claude 3 Opus is optimized for nuanced general analysis.
o1 and Claude 3 Opus are both premium models for high-quality outputs, but they approach quality differently. o1 uses extended internal reasoning chains for hard problems; Claude 3 Opus uses broad training and Constitutional AI for nuanced responses. For math and science reasoning, o1 leads. For general analysis, writing, and nuanced reasoning, Claude 3 Opus leads. These are complementary tools.
o1
- State-of-the-art performance on hard math and competitive programming benchmarks
- Extended reasoning chain for multi-step problem decomposition
- Good general-purpose capability alongside reasoning specialization
Best for: Math, competitive programming, and hard science reasoning tasks
Claude 3 Opus
- Superior nuanced reasoning for open-ended analysis and complex documents
- 200K context window for long-document processing
- More natural, conversational responses without the stilted reasoning artifacts of chain models
Best for: Nuanced analysis, long-document review, and general-purpose high-quality outputs
Pricing sourced from OpenRouter — updates as their catalog changes.
Pricing Comparison
All values pull from OpenRouter and update as their catalog changes.
| Metric | o1 | Claude 3 Opus | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $15.00 | Custom | 🏆 o1 |
| Output (per 1M tokens) | $60.00 | Custom | 🏆 o1 |
| Request fee | N/A | N/A | N/A |
| Image fee | N/A | N/A | N/A |
Cost Estimator
Estimate monthly billing using real OpenRouter prices.
o1 Total
$1,425Claude 3 Opus Total
VariableSavings unavailable (pricing not published for one model).
Capability Signals
Scores are directional estimates from model metadata — not official benchmark results.
o1MMLU Signal (Reasoning)Claude 3 Opus
87%
N/A
o1HumanEval Signal (Coding)Claude 3 Opus
76%
N/A
o1Agentic Tooling SignalClaude 3 Opus
84%
N/A
o1Multimodal SignalClaude 3 Opus
78%
N/A
Capabilities Matrix
Feature highlights for architecture and production fit.
o1 Strengths
- Supports image inputs for multimodal analysis workflows.
- Strong tool-calling and structured response support.
- Large context window for long documents and codebases.
Claude 3 Opus Strengths
- Live capability metadata is currently unavailable for this model.
- Re-check after the next OpenRouter catalog refresh.
- Use provider docs for exact benchmark claims.
API Implementation
Quick start snippets for each provider style.
OpenAI (Python)
from openai import OpenAI
client = OpenAI()
response = client.chat.completions.create(
model="openai/o1",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Unknown (Python)
# Model metadata unavailable # See provider docs for API usage.
Choose o1 when...
- Your application includes visual reasoning and image understanding tasks.
- You process large documents or code repositories in a single prompt.
- You rely on function calling, tool chaining, and structured output contracts.
Choose Claude 3 Opus when...
- Use Claude 3 Opus when this provider is required by policy constraints.
- Validate performance with your own evaluation set before production rollout.
- Confirm final cost in the provider dashboard for your deployment region.
Frequently Asked Questions
Practical checks before selecting a production model.
Which model is better for coding?
Coding preference depends on your stack and tool-calling needs. Compare the coding signal row, test with your repository tasks, and validate latency in your target region.
Which model is cheaper at scale?
Input and output token pricing can diverge by workload profile. Use the estimator with your monthly request count and token mix to get a realistic cost difference.
Are these official benchmark numbers?
Pricing is live from OpenRouter. Benchmark rows are ModelsAtlas metadata-based signals and should be treated as directional guidance, not official leaderboard scores.
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