GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost. GPT-5 Mini is the successor to OpenAI's o4-mini model.
Modalities
In / Out Price
$0.25 / $2per 1M
Context
400K
Released
Aug 7, 2025
Knowledge Cutoff
May 2024
Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick — Balanced (price + speed), Nitro (fastest), Floor (cheapest), or Exacto (highest tool-calling accuracy).
The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.
Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).
Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.
Scores on standardized evaluations. Higher percentages are better — and rank percentile shows where this model lands among all models on OpenRouter.
| Source | Benchmark | Score |
|---|---|---|
| Artificial Analysis | GPT-5 mini (high) Intelligence Index | 17.4 |
| Artificial Analysis | GPT-5 mini (high) Coding Index | 15.6 |
| Artificial Analysis | GPT-5 mini (high) Agentic Index | 8.9 |
| Artificial Analysis | GPT-5 mini (high) GPQA Diamond | 82.8% |
| Artificial Analysis | GPT-5 mini (high) HLE | 21.5% |
| Artificial Analysis | GPT-5 mini (high) IFBench | 75.4% |
| Artificial Analysis | GPT-5 mini (high) τ²-Bench Telecom | 68.4% |
| Artificial Analysis | GPT-5 mini (high) AA-LCR | 72.3% |
| Artificial Analysis | GPT-5 mini (high) GDPval-AA | 19.0% |
| Artificial Analysis | GPT-5 mini (high) CritPt | 0.0% |
| Artificial Analysis | GPT-5 mini (high) SciCode | 39.0% |
| Artificial Analysis | GPT-5 mini (high) Terminal-Bench Hard | 33.3% |
| Artificial Analysis | GPT-5 mini (high) AA-Omniscience Accuracy | 25.0% |
| Artificial Analysis | GPT-5 mini (high) AA-Omniscience Non-Hallucination Rate | 43.6% |
| Artificial Analysis | GPT-5 mini (medium) GPQA Diamond | 80.3% |
| Artificial Analysis | GPT-5 mini (medium) HLE | 15.9% |
| Artificial Analysis | GPT-5 mini (medium) IFBench | 71.2% |
| Artificial Analysis | GPT-5 mini (medium) τ²-Bench Telecom | 71.1% |
| Artificial Analysis | GPT-5 mini (medium) AA-LCR | 72.3% |
| Artificial Analysis | GPT-5 mini (medium) CritPt | 1.4% |
| Artificial Analysis | GPT-5 mini (medium) Terminal-Bench Hard | 28.8% |
| Artificial Analysis | GPT-5 mini (medium) AA-Omniscience Accuracy | 23.1% |
| Artificial Analysis | GPT-5 mini (medium) AA-Omniscience Non-Hallucination Rate | 55.7% |
| Artificial Analysis | GPT-5 mini (minimal) GPQA Diamond | 68.7% |
| Artificial Analysis | GPT-5 mini (minimal) HLE | 5.1% |
| Artificial Analysis | GPT-5 mini (minimal) IFBench | 45.6% |
| Artificial Analysis | GPT-5 mini (minimal) τ²-Bench Telecom | 31.9% |
| Artificial Analysis | GPT-5 mini (minimal) AA-LCR | 39.3% |
| Artificial Analysis | GPT-5 mini (minimal) CritPt | 0.0% |
| Artificial Analysis | GPT-5 mini (minimal) Terminal-Bench Hard | 14.4% |
| Artificial Analysis | GPT-5 mini (minimal) AA-Omniscience Accuracy | 19.2% |
| Artificial Analysis | GPT-5 mini (minimal) AA-Omniscience Non-Hallucination Rate | 10.7% |
| Design Arena | GPT-5 mini (Default) Models Arena 3D Elo | 1066 |
| Design Arena | GPT-5 mini (Default) Models Arena Asciiart Elo | 1140 |
| Design Arena | GPT-5 mini (Default) Models Arena Code Categories Elo | 1130 |
| Design Arena | GPT-5 mini (Default) Models Arena Data Visualization Elo | 1145 |
| Design Arena | GPT-5 mini (Default) Models Arena Game Development Elo | 1153 |
| Design Arena | GPT-5 mini (Default) Models Arena SVG Elo | 1114 |
| Design Arena | GPT-5 mini (Default) Models Arena UI Component Elo | 1121 |
| Design Arena | GPT-5 mini (Default) Models Arena Website Elo | 1137 |
Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.
Token volume and request traffic to this model over time.
Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.
| $0.25 | $2.00 | $0.03 | 4.60s | 60 tps | ||
| $0.25 | $2.00 | $0.025 | 4.71s | 60 tps | ||
Not used in Standard routing:Why these endpoints are not used | ||||||
Flex | $0.125 | $1.00 | $0.0125 | 4.48s | 115 tps | |
 | $0.275 | $2.20 | $0.033 | 5.68s | 75 tps | |
Throughput
115tok/s
P50, best across providers
Latency
4.48s
P50, best provider
100.00%
99.96%
When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost. GPT-5 Mini is the successor to OpenAI's o4-mini model.
GPT-5 Mini costs $0.25/M input tokens and $2.00/M output tokens, with separate rates for Cache Read at $0.03/M tokens.
GPT-5 Mini has a 400,000 token context window.
Yes. GPT-5 Mini accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
GPT-5 Mini accepts text, images, and files such as PDFs as input and returns text.
GPT-5 Mini is served by 2 providers on OpenRouter: OpenAI and Azure. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.
GPT-5 Mini was released on August 7, 2025. Its knowledge cutoff is May 31, 2024.
