GPT-5.3 Instant pricing
GPT-5.3 Instant costs $1.75 per 1M input tokens and $14.00 per 1M output tokens as of September 2026. Tracked daily since 14 June 2026 across 89 snapshots.
Current rates
- Input: $1.75 per 1M tokens
- Output: $14.00 per 1M tokens
- Context window: 128,000 tokens
No price movement recorded for GPT-5.3 Instant over the tracked period — the rate has held steady.
Cheaper alternatives to GPT-5.3 Instant
Ranked by blended cost assuming a 3:1 input-to-output ratio, which is typical of chat and agent workloads. Only currently callable models with a comparable context window are listed.
| Model | Input / 1M | Output / 1M | Cheaper by |
|---|---|---|---|
| Gemini 3.1 Pro | $2.00 | $12.00 | 6% |
| Claude Sonnet 5 | $2.00 | $10.00 | 17% |
| Grok 4.6 | $2.00 | $6.00 | 38% |
| GPT-5.6 Luna | $1.00 | $6.00 | 53% |
| Muse Spark 1.3 | $1.25 | $4.25 | 58% |