Openai · released 2026-03-03 · text model
GPT-5.3 Chat
Goes to OpenRouter · referral link · See disclosure →
Input price$1.75/1M tokens
Output price$14.00/1M tokens
Context128Ktokens
P50 latency—sfirst tok
Throughput—tok/s
Full pricing details
all prices in USD per 1M tokens · All hidden costs surfaced| Pricing tier | Input | Output | Notes |
|---|---|---|---|
Standard Pay-as-you-go API rate card | $1.75 | $14.00 | Default if no headers set |
With prompt caching Cached read · cache write | $0.18−90% | $14.00 | Cache writes priced at standard input ($1.75); cached reads 90% off. Requires cache_control header. |
Batch API (50% off) 24h SLA, async | $0.88−50% | $7.00−50% | Send up to 50K requests in one batch; results within 24h |
Image input (vision) Per image, low/high detail differ | $1.75 + image fee | $14.00 | $0.50 per 1024×1024 image at high detail; low detail ~$0.10 |
Reasoning tokens Hidden chain-of-thought tokens | $1.75 | $14.00 × ~3-8 | When using reasoning.effort: high, output tokens include hidden reasoning. Real cost can be 3-8× headline output. |
Structured output JSON mode + schema | $1.75 | $14.00 | No extra cost; first call may be slower (~2x latency) due to schema compilation |
Capabilities
Vision (image understanding)Function callingStructured output (JSON schema)Reasoning modeMultilingual (32+ langs)Batch APIAudio I/OFine-tuning