Model comparison
Claude Haiku 5.5 vs Sonar Reasoning Pro
Claude Haiku 5.5 has enough public results to be ranked (#52); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
PerplexitySummary
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $2 / $8 for Sonar Reasoning Pro.
- Claude Haiku 5.5 accepts more context: 1M tokens versus 128K.
Side by side
| Claude Haiku 5.5 | Sonar Reasoning Pro | |
|---|---|---|
| Provider | Anthropic | Perplexity |
| Noometry Index | 49.5 | — |
| Released | 2026-10-07 | 2024-01-01 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 128K |
| Max output | 128K | 4K |
| Input $ / M tokens | $0.10 | $2 |
| Output $ / M tokens | $0.50 | $8 |
| Results tracked | 9 | 1 |
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Category by category
Coding Not comparable
Claude Haiku 5.5: 49.2 (#50), Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| LMArena WebDev | 1587 | — |
Agentic & Tool Use Not comparable
Claude Haiku 5.5: —, Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| LMArena Search | — | 1139 |
Reasoning Not comparable
Claude Haiku 5.5: 35.2 (#69), Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| NYT Connections (extended) | 65.7% | — |
| Mystery Game Puzzles | 30% | — |
Math Not comparable
Claude Haiku 5.5: 73.6 (#18), Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
Knowledge Not comparable
Claude Haiku 5.5: 50.8 (#70), Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), Sonar Reasoning Pro: —
| Benchmark | Claude Haiku 5.5 | Sonar Reasoning Pro |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Frequently asked questions
Is Claude Haiku 5.5 better than Sonar Reasoning Pro?
Claude Haiku 5.5 has enough public results to be ranked (#52); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Which is cheaper, Claude Haiku 5.5 or Sonar Reasoning Pro?
Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; Sonar Reasoning Pro lists at $2 and $8.
Which has the bigger context window?
Claude Haiku 5.5 does, with 1M tokens against 128K.
How many benchmarks do Claude Haiku 5.5 and Sonar Reasoning Pro share?
0 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Sonar Reasoning Pro has 1.