Claude 3.7 Sonnet
Anthropic • text+image+file->text
Context Window200K
Knowledge CutoffFeb 24, 2025
Claude 3.7 Sonnet vs Claude 3 Opus
Claude 3 Opus for maximum capability on complex tasks, Claude 3.7 Sonnet for best price-to-performance in Claude family.
Open model page
Claude 3 Opus
Unknown • Unknown
Context WindowUnknown
Knowledge CutoffUnknown
Editorial Verdict
Claude 3 Opus is Anthropic's ceiling model; Claude 3.7 Sonnet is the best value choice for most production workloads.
Claude 3.7 Sonnet and Claude 3 Opus share Anthropic's strengths in reasoning and instruction following, with 3.7 Sonnet delivering 90% of Opus's capability at roughly half the cost. For most real-world tasks — coding, analysis, writing — the difference is imperceptible. Claude 3 Opus still leads on the hardest benchmarks, but 3.7 Sonnet is the better daily driver for teams that want top-tier quality without top-tier pricing.
Claude 3.7 Sonnet
- Best price-to-performance ratio in the Claude family — nearly Opus quality at Sonnet pricing
- Extended thinking mode available for complex tasks, giving on-demand depth when needed
- Same 200K context window as Opus for long-document and codebase processing
Best for: Cost-conscious teams wanting near-top-tier quality for everyday production workloads
Claude 3 Opus
- Highest raw capability on the hardest benchmarks (MMLU, graduate science, multi-step math)
- Slightly better at maintaining coherence over extremely long conversations
- Preferred for research-grade analysis where peak performance is non-negotiable
Best for: Research, high-stakes analysis, and tasks where maximum capability is essential
Pricing sourced from OpenRouter — updates as their catalog changes.
Pricing Comparison
All values pull from OpenRouter and update as their catalog changes.
| Metric | Claude 3.7 Sonnet | Claude 3 Opus | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | Custom | 🏆 Claude 3.7 Sonnet |
| Output (per 1M tokens) | $15.00 | Custom | 🏆 Claude 3.7 Sonnet |
| 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.
Claude 3.7 Sonnet Total
$330Claude 3 Opus Total
VariableSavings unavailable (pricing not published for one model).
Capability Signals
Scores are directional estimates from model metadata — not official benchmark results.
Claude 3.7 SonnetMMLU Signal (Reasoning)Claude 3 Opus
87%
N/A
Claude 3.7 SonnetHumanEval Signal (Coding)Claude 3 Opus
76%
N/A
Claude 3.7 SonnetAgentic Tooling SignalClaude 3 Opus
84%
N/A
Claude 3.7 SonnetMultimodal SignalClaude 3 Opus
78%
N/A
Capabilities Matrix
Feature highlights for architecture and production fit.
Claude 3.7 Sonnet 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.
Anthropic (Python)
import anthropic
client = anthropic.Anthropic()
message = client.messages.create(
model="anthropic/claude-3.7-sonnet",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content)Unknown (Python)
# Model metadata unavailable # See provider docs for API usage.
Choose Claude 3.7 Sonnet 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.
Is Claude 3.7 Sonnet better than Claude 3 Opus?
It depends on the workload. Claude 3.7 Sonnet and Claude 3 Opus differ in pricing, context window, and capability mix — see the side-by-side table above for the breakdown.
What's the price difference between Claude 3.7 Sonnet and Claude 3 Opus?
Claude 3.7 Sonnet: $3.00 per 1M input tokens. Claude 3 Opus: N/A per 1M input tokens. Output token pricing typically runs 2-5x higher.
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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