GPT-5.2 vs Sonar Pro
Model Markets Rankings
Intelligence, Cost, and Efficiency
| Ranking | GPT-5.2 | Sonar Pro |
|---|---|---|
| IntelligenceHigher is better · MM Intelligence v1.4 | #32 of 4649.3 score · 3/3-source complete | UnrankedNot in the 46-model eligible cohort |
| CostLower is better · Published-token output estimate | #29 of 45$0.161 per LiveBench case | UnrankedNot in the 45-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.1 | #34 of 3842.6 score · 3/3-source intelligence | UnrankedNot in the 38-model eligible cohort |
Ranks come from current available eligible cohorts. Intelligence may use a labeled two-of-three partial core. Green highlights appear only when both models are ranked in the same metric, and the three dimensions are not collapsed into an overall winner.
Benchmark Performance
Available Benchmarks
| Benchmark | GPT-5.2 | Sonar Pro |
|---|---|---|
| LMArena Search Arenasearch-2026-08-24-011508720696 · arena_rating · leader | 1,172.14100% of row best · rating · gpt-5.2-search-non-reasoning; 95% CI [1166.59081201, 1177.68538907]; votes 75658; rank 20 | 1,130.2196% of row best · rating · ppl-sonar-pro-high; 95% CI [1124.48384666, 1135.92956299]; votes 28519; rank 31 |
| Overall ResultCounted from the protocol-matched rows above | 1 benchmark winOverall lead | 0 benchmark wins |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Technical Differences
Side-by-Side Facts
| Field | GPT-5.2 | Sonar Pro |
|---|---|---|
| Developer | OpenAI | Perplexity |
| Family | Gpt 5 2 | Sonar |
| Model | GPT-5.2 | Sonar Pro |
| Version | GPT-5.2 | Sonar Pro |
| Lifecycle | active | active |
| Released | 2025-12-11 | Unknown |
| Knowledge cutoff | 2025-08-31 | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 400K | 200K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Openai (Standard), Openrouter (Standard) | Openrouter (Standard), Perplexity (Standard) |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | chat, citations, search |
13 comparable fields · 8 material differences · Pair passes the primary-source comparison gate
GPT-5.2 Capabilities
Sonar Pro Capabilities
Internal Comparison Graph
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Primary Evidence
Sources and Freshness
Questions
GPT-5.2 vs Sonar Pro FAQs
Is GPT-5.2 or Sonar Pro better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-5.2 and Sonar Pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-5.2 or Sonar Pro?+
GPT-5.2 is $1.75 and Sonar Pro is $3.00 per million tokens, so GPT-5.2 is cheaper on this metric. GPT-5.2 is $14.00 and Sonar Pro is $15.00 per million tokens, so GPT-5.2 is cheaper on this metric.
Which has a larger context window, GPT-5.2 or Sonar Pro?+
GPT-5.2 has the larger sourced context window. GPT-5.2 supports 400K and Sonar Pro supports 200K.
Which performs better in benchmarks, GPT-5.2 or Sonar Pro?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can GPT-5.2 or Sonar Pro be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-5.2 is not marked open weight; Sonar Pro is not marked open weight.
Can GPT-5.2 and Sonar Pro understand images?+
GPT-5.2 is documented with image input; Sonar Pro is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, GPT-5.2 or Sonar Pro?+
Neither has a larger sourced maximum output. GPT-5.2 is 128K and Sonar Pro is —.
Do GPT-5.2 and Sonar Pro support reasoning and tool use?+
GPT-5.2: reasoning, tool calling, and image input. Sonar Pro: none of these features are definitively sourced. Feature support does not establish relative quality.
Which is available from more inference providers, GPT-5.2 or Sonar Pro?+
GPT-5.2 has 2 sourced provider routes; Sonar Pro has 2, a tie.
Which offers better value, GPT-5.2 or Sonar Pro?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.