Claude 3.5 Haiku vs o3 Deep Research
Claude 3.5 Haiku (2024) and o3 Deep Research (2025) are frontier-tier reasoning models from Anthropic and OpenAI. Claude 3.5 Haiku ships a 200k-token context window, while o3 Deep Research ships a 200k-token context window. On pricing, Claude 3.5 Haiku costs $0.80/1M 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 3.5 Haiku is ~1150% cheaper at $0.80/1M; pay for o3 Deep Research only for vision-heavy evaluation.
Decision scorecard
Local evidence first| Signal | Claude 3.5 Haiku | o3 Deep Research |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and provider-routed production | 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 | $4/1M tokens | $40/1M tokens |
| Provider routes | 6 tracked | 2 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Claude 3.5 Haiku has the lower cheapest tracked output price at $4/1M tokens.
- Claude 3.5 Haiku has broader tracked provider coverage for fallback and route flexibility.
- Claude 3.5 Haiku uniquely exposes Code execution in local model data.
- Local decision data tags Claude 3.5 Haiku for Coding, RAG, and Agents.
- o3 Deep Research uniquely exposes Multimodal and JSON / Tool use in local model data.
- 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 3.5 Haiku
$1,640
Cheapest tracked route/tier: Anthropic
o3 Deep Research
$18,000
Cheapest tracked route/tier: Vercel AI Gateway
Estimated monthly gap: $16,360. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Vercel AI Gateway; start route-level A/B tests there.
- o3 Deep Research is $36/1M 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.
- o3 Deep Research adds Multimodal and JSON / Tool use in local capability data.
- Provider overlap exists on Vercel AI Gateway; start route-level A/B tests there.
- Claude 3.5 Haiku is $36/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Multimodal and JSON / Tool use before moving production traffic.
- Claude 3.5 Haiku adds Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-10-22 | 2025-10-10 |
| Context window | 200k | 200k |
| Parameters | — | — |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Weights | Not released | Not released |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | - | 2024-06 |
Pricing and availability
| Pricing attribute | Claude 3.5 Haiku | o3 Deep Research |
|---|---|---|
| Input price | $0.80/1M tokens | $10/1M tokens |
| Output price | $4/1M tokens | $40/1M tokens |
| Providers |
Capabilities
| Capability | Claude 3.5 Haiku | o3 Deep Research |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | No | Yes |
| Reasoning | Yes | Yes |
| JSON / Tool use | No | 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.
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Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.