o3
- Family
- o3
- Released
- 2025-04-16
- Context
- 200K
- Max output
- 100K
- Architecture
- Decoder Only
- Knowledge cutoff
- 2024-06
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryRestricted
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
Cheapest of 3 routes · OpenAI API · cache read $0.500
About
OpenAI o3 reasoning model with advanced multi-step problem-solving capabilities.
Providers(3)
Compare all 3Compare API pricing across 3 tracked provider routes for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Batch in / out | Cache | Route |
|---|---|---|---|---|---|
| OpenAI API | $2.00 | $8.00 | $1.00 / $4.00 | read $0.500 | Serverless |
| OpenRouter | $2.00 | $8.00 | - | read $0.500 | Serverless |
| Vercel AI Gateway | $2.00 | $8.00 | - | read $0.500 | Serverless |
Available via routers & gateways(15)
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.
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.
Kong AI Gateway
GatewayMulti-LLM AI gateway built on Kong Gateway 3.x, adding semantic routing, load balancing, guardrails, and MCP traffic analytics as plugins over Kong's existing API management platform.
Capabilities
Benchmark peer barsfor Coding
Benchmark scores(12)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 96.7 | 2025-04Observed 2026-04-09 | — | ||
| 71.7 | custom agent scaffold, high reasoningObserved 2025-04-16 | — | ||
| 85.5 | v6 pass@1, independent Kaggle leaderboardObserved 2025-11-13 | — | ||
| 81.3 | 2026-04 (high)Observed 2026-04-14 | — | ||
| 1412.0 | —Observed 2026-04-15 | — | ||
| 87.7 | GPQA Diamond, high reasoningObserved 2025-04-16 | — | ||
| 82.9 | standard MMMUObserved 2025-04-16 | — | ||
| 86.8 | —Observed 2026-06-03 | — | ||
| 76.4 | LLM-Stats aggregator (official no-tools or equivalent)Observed 2026-06-07 | — | ||
| 96.7 | —Observed 2025-04-16 | — | ||
| 88.9 | AIME 2025 pass@1, high reasoningObserved 2025-04-16 | — | ||
| 20.3 | Humanity's Last Exam, no tools, high reasoningObserved 2025-04-16 | — |
Migration checks
No linked migration route is available for this model yet.
Rankings & picks(4)
Compare o3 with other models
Comparison and alternatives
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Cheapest of 3 routes · OpenAI API · cache read $0.500