Model comparison
Celeris-1 vs Gemini 2.5 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); Gemini 2.5 Pro #70 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Celeris-1 and Gemini 2.5 Pro share 0 comparable benchmark results. 1 of 8 categories are comparable. 1 result is unique to Celeris-1; 24 to Gemini 2.5 Pro.
Updated July 24, 2026- Shared results
- 0
- Celeris-1 only
- 1
- Gemini 2.5 Pro only
- 24
- Comparable categories
- 1 / 8
Treat this as a split decision. Celeris-1 makes more sense if knowledge is the priority or you want the cheaper token bill; Gemini 2.5 Pro is the better fit if you need the larger 1M context window.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Celeris-1 and Gemini 2.5 Pro finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Gemini 2.5 Pro is also the more expensive model on tokens at $1.25 input / $10.00 output per 1M tokens, versus $2.00 input / $6.00 output per 1M tokens for Celeris-1. Gemini 2.5 Pro gives you the larger context window at 1M, 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 | Gemini 2.5 Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Celeris-1$2 input / $6 output | Gemini 2.5 Pro$1.25 input / $10 output | Celeris-1 has the lower combined listed price. |
| Generation speedtokens per second | Celeris-1Not available | Gemini 2.5 Pro117 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Celeris-1Not available | Gemini 2.5 Pro21.19 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Celeris-18K | Gemini 2.5 Pro1M | Gemini 2.5 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
KnowledgeCeleris-1 wins9 benchmarks
| Benchmark | Celeris-1 | Gemini 2.5 Pro | Result |
|---|---|---|---|
| MMLU-ProSource | 75.9% | — | Not comparable |
| GPQASource | — | 83% | Not comparable |
| HLESource | — | 18.8% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 25.8% | Not comparable |
| AA-GPQA DiamondSource | — | 84.4% | Not comparable |
| AA-HLESource | — | 21.1% | Not comparable |
| AA-Omniscience IndexSource | — | -14.3% | Not comparable |
| AA-Omniscience AccuracySource | — | 39.0% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 87.4% | Not comparable |
Math2 benchmarks
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Celeris-1 | Gemini 2.5 Pro | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 48.7% | Not comparable |
Frequently Asked Questions (2)
Which is better, Celeris-1 or Gemini 2.5 Pro?
Celeris-1 and Gemini 2.5 Pro are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for knowledge tasks, Celeris-1 or Gemini 2.5 Pro?
Celeris-1 has the edge for knowledge tasks in this comparison, averaging 75.9 versus 27.4. Gemini 2.5 Pro stays close enough that the answer can still flip depending on your workload.
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