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GPT-5.3 Codex Spark
openai·openai/gpt-5.3-codex-spark·GA·Closed·gpt-codex-spark series
Coding-optimized GPT model for repository edits, reviews, and agentic software work
At a glance
Official price$1.75 / $14.00 per 1M
Cache read $0.175 · OpenAI
Lowest paid$1.75 / $14.00
OpenAI First-party · 1× spread
1 more $0 channels
Context128,000
Output limit32,000
Capabilities
✓ Reasoning✓ Tool use✓ Structured outputTemperature✓ Attachments
⚠ Providers report capability flags inconsistently
Modalities
TextImagePDF
Knowledge cutoff2025-08-31
Released / updated2026-02-05 / 2026-02-05
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 4 providers3 with public prices · 1 free
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Poe | Gateway | Free | — | — | 128,000 | 16,384 | ||
| OpenAIOfficial | First-party | $1.75 | $14.00 | $0.175 | — | 128,000 | 32,000 | |
| Cloudflare AI Gateway | Cloud | $1.75 | $14.00 | $0.175 | — | 128,000 | 32,000 | |
| OpenCode Zen | Gateway | $1.75 | $14.00 | $0.175 | — | 128,000 | 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
1OpenAI · Official$861.00
2Cloudflare AI Gateway$861.00
3OpenCode Zen$861.00
1 more channels offer $0 (Poe); free tiers usually have rate limits and no SLA, excluded from ranking.
The cheapest paid channel is official.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = noneeffort = loweffort = mediumeffort = higheffort = xhigh
1 / 4 providers expose no reasoning control (reasoning_options: []).
Related models
GLM-5.2cheaper alternative$1.40 / $4.40GPT OSS 120Bcheaper alternative$1.00 / $4.20Kimi K2.6cheaper alternative$0.95 / $4.00DeepSeek V4 Procheaper alternative$0.435 / $0.87
Price historyone sample accumulated per data sync
Input listOutput listMin blended