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GPT-5.3 Chat (latest)
openai·openai/gpt-5.3-chat-latest·GA·Closed·gpt series
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
At a glance
Official price$1.75 / $14.00 per 1M
Cache read $0.175 · OpenAI
Lowest paid$1.75 / $14.00
OrcaRouter Gateway · 1× spread
Context128,000
⚠ Providers report 128,000–400,000; the table below is authoritative
Output limit16,384
Capabilities
Reasoning✓ Tool use✓ Structured output✓ Temperature✓ Attachments
⚠ Providers report capability flags inconsistently
Modalities
TextImagePDF
Knowledge cutoff2025-08-31
Released / updated2026-03-03 / 2026-03-03
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 5 providers5 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| OrcaRouter | Gateway | $1.75 | $14.00 | $0.175 | — | 128,000 | 16,384 | |
| OpenAIOfficial | First-party | $1.75 | $14.00 | $0.175 | — | 128,000 | 16,384 | |
| Merge Gateway | Gateway | $1.75 | $14.00 | $0.175 | — | 128,000 | 16,384 | |
| Cloudflare AI Gateway | Cloud | $1.75 | $14.00 | $0.175 | — | 128,000 | 16,384 | |
| Abacus | Gateway | $1.75 | $14.00 | — | — | 400,000 ⚠ | 128,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1OrcaRouter$861.00
2OpenAI · Official$861.00
3Merge Gateway$861.00
4Cloudflare AI Gateway$861.00
5Abacus$1,050.00
Switch to OrcaRouter to save $0.00/mo (0%). The gap is small, so staying on the official channel is fine.
Note: this is a gateway; verify availability and rate limits yourself.
Related models
RouteLLMsame series$3.00 / $15.00GPT-Realtime-2.1same series$4.00 / $24.00NanoGPT Helpsame series$0 / $0Qwen3 Maxcheaper alternative$0.861 / $3.44Qwen3 235B-A22B Instruct 2507cheaper alternative$1.03 / $3.08Qwen3-Next 80B-A3B Instructcheaper alternative$0.144 / $0.574Qwen3-Coder 30B-A3B Instructcheaper alternative$0.216 / $0.861
Price historyone sample accumulated per data sync
Input listOutput listMin blended