DeepSeek V4 Pro vs GPT-4o-mini Search Preview
DeepSeek V4 Pro (2026) and GPT-4o-mini Search Preview (2025) are frontier reasoning models from DeepSeek and OpenAI. DeepSeek V4 Pro ships a 1M-token context window, while GPT-4o-mini Search Preview ships a 128K-token context window. On pricing, DeepSeek V4 Pro ranges from $0.66 to $1.32/1M input tokens by tier; GPT-4o-mini Search Preview costs $0.15/1M input tokens. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
DeepSeek V4 Pro fits 8x more tokens; pick it for long-context work and GPT-4o-mini Search Preview for tighter calls.
Decision scorecard
Local evidence first| Signal | DeepSeek V4 Pro | GPT-4o-mini Search Preview |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and long-context analysis | provider-routed production |
| Decision fit | Coding, RAG, and Agents | RAG, Long context, and Classification |
| Context window | 1M | 128K |
| Cheapest output | $0.73/1M tokens | $0.60/1M tokens |
| Provider routes | 6 tracked | 3 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- DeepSeek V4 Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- DeepSeek V4 Pro has broader tracked provider coverage for fallback and route flexibility.
- DeepSeek V4 Pro uniquely exposes Reasoning and JSON / Tool use in local model data.
- Local decision data tags DeepSeek V4 Pro for Coding, RAG, and Agents.
- GPT-4o-mini Search Preview has the lower cheapest tracked output price at $0.60/1M tokens.
- Local decision data tags GPT-4o-mini Search Preview for RAG, Long context, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek V4 Pro
$472
Cheapest tracked route/tier: OpenRouter
GPT-4o-mini Search Preview
$270
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $202. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
- GPT-4o-mini Search Preview is $0.13/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning and JSON / Tool use before moving production traffic.
- Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
- DeepSeek V4 Pro is $0.13/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- DeepSeek V4 Pro adds Reasoning and JSON / Tool use in local capability data.
Specs
Pricing and availability
| Pricing attribute | DeepSeek V4 Pro | GPT-4o-mini Search Preview |
|---|---|---|
| Input price |
| $0.15/1M tokens |
| Output price |
| $0.60/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek V4 Pro | GPT-4o-mini Search Preview |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| JSON / Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | No | 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 reasoning mode: DeepSeek V4 Pro, JSON / Tool use: DeepSeek V4 Pro, and JSON / Tool use: DeepSeek V4 Pro. Both models share structured outputs, 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, DeepSeek V4 Pro lists tiered pricing: Off-peak is $0.66/1M input and $1.98/1M output; Peak is $1.32/1M input and $3.96/1M output, while GPT-4o-mini Search Preview lists $0.15/1M input and $0.60/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts GPT-4o-mini Search Preview lower by about $0.19 per million blended tokens. For tiered rows, this cheapest-track view can understate interactive or fast-lane spend, so compare the tier you will actually use. Availability is 6 providers versus 3, so concentration risk also matters.
Choose DeepSeek V4 Pro when reasoning depth, larger context windows, and broader provider choice are central to the workload. Choose GPT-4o-mini Search Preview when provider fit and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, DeepSeek V4 Pro or GPT-4o-mini Search Preview?
DeepSeek V4 Pro supports 1M tokens, while GPT-4o-mini Search Preview supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, DeepSeek V4 Pro or GPT-4o-mini Search Preview?
DeepSeek V4 Pro lists tiered pricing: Off-peak is $0.66/1M input and $1.98/1M output; Peak is $1.32/1M input and $3.96/1M output. GPT-4o-mini Search Preview lists $0.15/1M input and $0.60/1M output tokens on the cheapest tracked provider. Compare the tier you will actually use; cheap async pricing can overstate savings for interactive workflows. Provider discounts or batch pricing can still change the final bill.
Is DeepSeek V4 Pro or GPT-4o-mini Search Preview open source?
DeepSeek V4 Pro is listed under MIT. GPT-4o-mini Search Preview 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 reasoning mode, DeepSeek V4 Pro or GPT-4o-mini Search Preview?
DeepSeek V4 Pro has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for JSON / Tool use, DeepSeek V4 Pro or GPT-4o-mini Search Preview?
DeepSeek V4 Pro has the clearer documented JSON / Tool use signal in this comparison. If JSON / Tool use is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run DeepSeek V4 Pro and GPT-4o-mini Search Preview?
DeepSeek V4 Pro is available on DeepSeek Platform, Fireworks AI, OpenRouter, Vercel AI Gateway, and Novita AI. GPT-4o-mini Search Preview is available on OpenRouter, Vercel AI Gateway, and OpenAI API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Popular comparisons for DeepSeek V4 Pro
Popular comparisons for GPT-4o-mini Search Preview
Last reviewed: 2026-10-08. Data sourced from public model cards and provider documentation.