Model comparison
Celeris-1 vs GPT-5.2 Pro
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Celeris-1 unranked (Not scored); GPT-5.2 Pro #23 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Celeris-1 and GPT-5.2 Pro share 0 comparable benchmark results. 0 of 8 categories are comparable. 1 result is unique to Celeris-1; 0 to GPT-5.2 Pro.
Updated July 24, 2026- Shared results
- 0
- Celeris-1 only
- 1
- GPT-5.2 Pro only
- 0
- Comparable categories
- 0 / 8
Benchmark data for Celeris-1 and GPT-5.2 Pro is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM does not have sourced benchmark coverage for GPT-5.2 Pro yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GPT-5.2 Pro is priced at $25.00 input / $150.00 output per 1M tokens, versus $2.00 input / $6.00 output per 1M tokens for Celeris-1. GPT-5.2 Pro has the larger context window at 400K, compared with 8K for Celeris-1.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Celeris-1 | GPT-5.2 Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Celeris-1$2 input / $6 output | GPT-5.2 Pro$25 input / $150 output | Celeris-1 has the lower combined listed price. |
| Generation speedtokens per second | Celeris-1Not available | GPT-5.2 ProNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Celeris-1Not available | GPT-5.2 ProNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Celeris-18K | GPT-5.2 Pro400K | GPT-5.2 Pro lists the larger context window. |
Benchmark Deep Dive
Knowledge1 benchmarks
| Benchmark | Celeris-1 | GPT-5.2 Pro | Result |
|---|---|---|---|
| MMLU-ProSource | 75.9% | — | Not comparable |
Frequently Asked Questions (3)
Can I compare Celeris-1 and GPT-5.2 Pro on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Celeris-1 and GPT-5.2 Pro today?
Celeris-1: $2.00 input / $6.00 output per 1M tokens GPT-5.2 Pro: $25.00 input / $150.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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