DeepSeek V3 vs GPT-4o Mini (07-18)
DeepSeek V3 (2024) and GPT-4o Mini (07-18) (2024) are compact production models from DeepSeek and OpenAI. DeepSeek V3 ships a 64k-token context window, while GPT-4o Mini (07-18) ships a 128k-token context window. On Aider Polyglot, DeepSeek V3 leads by 44.8 pts. On pricing, DeepSeek V3 costs $0.10/1M input tokens versus $0.15/1M 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.
DeepSeek V3 is ~50% cheaper at $0.10/1M; pay for GPT-4o Mini (07-18) only for coding workflow support.
Decision scorecard
Local evidence first| Signal | DeepSeek V3 | GPT-4o Mini (07-18) |
|---|---|---|
| Best for | tool-calling agents and provider-routed production | multimodal apps and provider-routed production |
| Decision fit | Coding, Agents, and Classification | Coding, RAG, and Agents |
| Context window | 64k | 128k |
| Cheapest output | $0.30/1M tokens | $0.60/1M tokens |
| Provider routes | 13 tracked | 3 tracked |
| Shared benchmarks | Aider Polyglot leader | 2 shared |
Decision tradeoffs
- DeepSeek V3 holds a shared-benchmark lead on Aider Polyglot, ahead by 44.8 points.
- DeepSeek V3 has the lower cheapest tracked output price at $0.30/1M tokens.
- DeepSeek V3 has broader tracked provider coverage for fallback and procurement flexibility.
- DeepSeek V3 uniquely exposes Function calling and Tool use in local model data.
- Local decision data tags DeepSeek V3 for Coding, Agents, and Classification.
- GPT-4o Mini (07-18) has the larger context window for long prompts, retrieval packs, or transcript analysis.
- GPT-4o Mini (07-18) uniquely exposes Vision and Code execution in local model data.
- Local decision data tags GPT-4o Mini (07-18) for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek V3
$155
Cheapest tracked route/tier: Bitdeer AI
GPT-4o Mini (07-18)
$270
Cheapest tracked route/tier: OpenAI API
Estimated monthly gap: $115. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter and Replicate API; start route-level A/B tests there.
- GPT-4o Mini (07-18) is $0.30/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Function calling and Tool use before moving production traffic.
- GPT-4o Mini (07-18) adds Vision and Code execution in local capability data.
- Provider overlap exists on OpenRouter and Replicate API; start route-level A/B tests there.
- DeepSeek V3 is $0.30/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Code execution before moving production traffic.
- DeepSeek V3 adds Function calling and Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-12-26 | 2024-07-18 |
| Context window | 64k | 128k |
| Parameters | 671B | — |
| Architecture | Mixture of Experts | Decoder Only |
| License | MITOSI-approved | Proprietary |
| Openness | Open source | Proprietary |
| Commercial use | Commercial use: permitted | Commercial use: conditional |
| Knowledge cutoff | 2024-04 | 2023-10 |
Pricing and availability
| Pricing attribute | DeepSeek V3 | GPT-4o Mini (07-18) |
|---|---|---|
| Input price | $0.10/1M tokens | $0.15/1M tokens |
| Output price | $0.30/1M tokens | $0.60/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek V3 | GPT-4o Mini (07-18) |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | No | Yes |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | DeepSeek V3 | GPT-4o Mini (07-18) |
|---|---|---|
| Aider Polyglot | 48.4 | 3.6 |
| BigCodeBench | 50.0 | 46.1 |
Deep dive
On shared benchmark coverage, Aider Polyglot has DeepSeek V3 at 48.4 and GPT-4o Mini (07-18) at 3.6, with DeepSeek V3 ahead by 44.8 points; BigCodeBench has DeepSeek V3 at 50 and GPT-4o Mini (07-18) at 46.1, with DeepSeek V3 ahead by 3.9 points. The largest visible gap is 44.8 points on Aider Polyglot, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on vision: GPT-4o Mini (07-18), function calling: DeepSeek V3, tool use: DeepSeek V3, and code execution: GPT-4o Mini (07-18). 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 V3 lists $0.10/1M input and $0.30/1M output tokens on the cheapest tracked provider, while GPT-4o Mini (07-18) lists $0.15/1M input and $0.60/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts DeepSeek V3 lower by about $0.13 per million blended tokens. Availability is 13 providers versus 3, so concentration risk also matters.
Choose DeepSeek V3 when provider fit, lower input-token cost, and broader provider choice are central to the workload. Choose GPT-4o Mini (07-18) when coding workflow support and larger context windows 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 V3 or GPT-4o Mini (07-18)?
GPT-4o Mini (07-18) supports 128k tokens, while DeepSeek V3 supports 64k 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 V3 or GPT-4o Mini (07-18)?
DeepSeek V3 is cheaper on tracked token pricing. DeepSeek V3 costs $0.10/1M input and $0.30/1M output tokens. GPT-4o Mini (07-18) costs $0.15/1M input and $0.60/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is DeepSeek V3 or GPT-4o Mini (07-18) open source?
DeepSeek V3 is listed under MIT. GPT-4o Mini (07-18) 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, DeepSeek V3 or GPT-4o Mini (07-18)?
GPT-4o Mini (07-18) has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for function calling, DeepSeek V3 or GPT-4o Mini (07-18)?
DeepSeek V3 has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run DeepSeek V3 and GPT-4o Mini (07-18)?
DeepSeek V3 is available on DeepInfra, Fireworks AI, DeepSeek Platform, Microsoft Foundry, and OpenRouter. GPT-4o Mini (07-18) is available on OpenAI API, OpenRouter, and Replicate API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.