o3 Mini
o3 Mini is a legacy integration reference; evaluate o3 before starting new work.
Use it for
- Teams maintaining an existing integration
- Workloads that can use a 200k context window
- Buyers comparing 4 tracked provider routes
Do not use it for
- New production launches
- Vision or document-understanding workloads
- Family
- o3
- Released
- 2025-01-31
- Context
- 200k
- Max output
- 100,000
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-04
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
Cheapest of 4 routes · OpenRouter
This model is deprecated. OpenAI recommends switching to o3.
About
OpenAI o3-mini - cost-optimized reasoning model. Compact variant of reasoning model family.
Top use-case fit: coding, agents, and build tasks
Coding
2 relevant benchmarks in the decision map.
RAG
Included by capability and metadata signals in the decision map.
Agents
1 relevant benchmark in the decision map.
Provider price ladder
Compare all 4Compare API pricing across 4 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Batch in / out | Cache | Route |
|---|---|---|---|---|---|
| OpenRouter | $1.10 | $4.40 | - | - | Serverless |
| Vercel AI Gateway | $1.10 | $4.40 | - | read $0.550 | Serverless |
| Azure OpenAI | - | - | $0.150 / $0.600 | - | ServerlessPartial |
| OpenAI API | - | - | $0.150 / $0.600 | - | ServerlessPartial |
Available via routers & gateways(16)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Azure AI Foundry Model Router
RouterMicrosoft Azure AI Foundry's native model router that uses a trained ML model to route each prompt in real time to the optimal Azure-hosted model, with Balanced/Cost/Quality mode selection and automatic failover.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Capabilities
Benchmark peer barsfor Coding
Benchmark scores(6)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| Aider Polyglot | 60.4 | 2026-04 (high)Observed 2026-04-14 | — | Source |
| Chatbot Arena | 1335.0 | —Observed 2026-04-15 | — | Source |
| Google-Proof Q&A | 79.7 | —Observed 2025-01-31 | — | Source |
| MMLU PRO | 79.1 | —Observed 2026-04-14 | — | Source |
| AIME 2024 | 87.3 | —Observed 2025-01-31 | — | Source |
| SWE-bench Verified | 49.3 | —Observed 2025-01-31 | — | Source |
Migration checks
No linked migration route is available for this model yet.
Compare o3 Mini with other models
Comparison and alternatives
Browse all comparisons →Show all 36 popular comparisonssorted by 7-day search impressions
Cheapest of 4 routes · OpenRouter