Claude 3.7 Sonnet vs o3 Deep Research
Claude 3.7 Sonnet (2024) and o3 Deep Research (2025) are frontier-tier reasoning models from Anthropic and OpenAI. Claude 3.7 Sonnet ships a 200k-token context window, while o3 Deep Research ships a 200k-token context window. On pricing, Claude 3.7 Sonnet costs $3/1M input tokens versus $10/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Claude 3.7 Sonnet is ~233% cheaper at $3/1M; pay for o3 Deep Research only for vision-heavy evaluation.
Decision scorecard
Local evidence first| Signal | Claude 3.7 Sonnet | o3 Deep Research |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Coding, RAG, and Agents | RAG, Agents, and Long context |
| Context window | 200k | 200k |
| Cheapest output | $15/1M tokens | $40/1M tokens |
| Provider routes | 6 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Claude 3.7 Sonnet has the lower cheapest tracked output price at $15/1M tokens.
- Claude 3.7 Sonnet has broader tracked provider coverage for fallback and procurement flexibility.
- Claude 3.7 Sonnet uniquely exposes Code execution in local model data.
- Local decision data tags Claude 3.7 Sonnet for Coding, RAG, and Agents.
- Local decision data tags o3 Deep Research for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Claude 3.7 Sonnet
$6,150
Cheapest tracked route/tier: GCP Vertex AI
o3 Deep Research
$18,000
Cheapest tracked route/tier: Vercel AI Gateway
Estimated monthly gap: $11,850. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Claude 3.7 Sonnet and o3 Deep Research; plan for SDK, billing, or endpoint changes.
- o3 Deep Research is $25/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Code execution before moving production traffic.
- No overlapping tracked provider route is sourced for o3 Deep Research and Claude 3.7 Sonnet; plan for SDK, billing, or endpoint changes.
- Claude 3.7 Sonnet is $25/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Claude 3.7 Sonnet adds Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-03-04 | 2025-10-10 |
| Context window | 200k | 200k |
| Parameters | — | — |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2024-11 | 2024-06 |
Pricing and availability
| Pricing attribute | Claude 3.7 Sonnet | o3 Deep Research |
|---|---|---|
| Input price | $3/1M tokens | $10/1M tokens |
| Output price | $15/1M tokens | $40/1M tokens |
| Providers |
Capabilities
| Capability | Claude 3.7 Sonnet | o3 Deep Research |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | Yes |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on code execution: Claude 3.7 Sonnet. Both models share vision, multimodal input, reasoning mode, and function calling, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, Claude 3.7 Sonnet lists $3/1M input and $15/1M output tokens on the cheapest tracked provider, while o3 Deep Research lists $10/1M input and $40/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Claude 3.7 Sonnet lower by about $12.40 per million blended tokens. Availability is 6 providers versus 1, so concentration risk also matters.
Choose Claude 3.7 Sonnet when coding workflow support, lower input-token cost, and broader provider choice are central to the workload. Choose o3 Deep Research when vision-heavy evaluation are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Which has a larger context window, Claude 3.7 Sonnet or o3 Deep Research?
Claude 3.7 Sonnet supports 200k tokens, while o3 Deep Research supports 200k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Claude 3.7 Sonnet or o3 Deep Research?
Claude 3.7 Sonnet is cheaper on tracked token pricing. Claude 3.7 Sonnet costs $3/1M input and $15/1M output tokens. o3 Deep Research costs $10/1M input and $40/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Claude 3.7 Sonnet or o3 Deep Research open source?
Claude 3.7 Sonnet is listed under Proprietary. o3 Deep Research is listed under Proprietary. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Claude 3.7 Sonnet or o3 Deep Research?
Both Claude 3.7 Sonnet and o3 Deep Research expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for multimodal input, Claude 3.7 Sonnet or o3 Deep Research?
Both Claude 3.7 Sonnet and o3 Deep Research expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Claude 3.7 Sonnet and o3 Deep Research?
Claude 3.7 Sonnet is available on Snowflake Cortex, GCP Vertex AI, Replicate API, OpenRouter, and AWS Bedrock. o3 Deep Research is available on Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.