GPT-5.4 Nano vs Sonar Pro
Model Markets Rankings
Intelligence, Cost, and Efficiency
| Ranking | GPT-5.4 Nano | Sonar Pro |
|---|---|---|
| IntelligenceHigher is better · MM Intelligence v1.2 | #22 of 2214.7 score | UnrankedNot in the 22-model eligible cohort |
| CostLower is better · Published-token output estimate | #13 of 36$0.058 per LiveBench case | UnrankedNot in the 36-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.0 | #21 of 2235.3 score | UnrankedNot in the 22-model eligible cohort |
Ranks come from the current complete eligible cohorts. Green highlights appear only when both models are ranked in the same metric. Missing required inputs remain unranked, and the three dimensions are not collapsed into an overall winner.
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | GPT-5.4 Nano | Sonar Pro |
|---|---|---|
| Developer | OpenAI | Perplexity |
| Family | Gpt 5 4 | Sonar |
| Model | GPT-5.4 Nano | Sonar Pro |
| Version | GPT-5.4 Nano | Sonar Pro |
| Lifecycle | active | active |
| Released | 2026-03-17 | 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-5.4 Nano Capabilities
Sonar Pro Capabilities
Internal Comparison Graph
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Primary Evidence
Sources and Freshness
Questions
GPT-5.4 Nano vs Sonar Pro FAQs
Is GPT-5.4 Nano or Sonar Pro better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-5.4 Nano and Sonar Pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-5.4 Nano or Sonar Pro?+
GPT-5.4 Nano is $0.20 and Sonar Pro is $3.00 per million tokens, so GPT-5.4 Nano is cheaper on this metric. GPT-5.4 Nano is $1.25 and Sonar Pro is $15.00 per million tokens, so GPT-5.4 Nano is cheaper on this metric.
Which has a larger context window, GPT-5.4 Nano or Sonar Pro?+
GPT-5.4 Nano has the larger sourced context window. GPT-5.4 Nano supports 400K and Sonar Pro supports 200K.
Which performs better in benchmarks, GPT-5.4 Nano 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-5.4 Nano or Sonar Pro be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-5.4 Nano is not marked open weight; Sonar Pro is not marked open weight.
Can GPT-5.4 Nano and Sonar Pro understand images?+
GPT-5.4 Nano 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-5.4 Nano or Sonar Pro?+
Neither has a larger sourced maximum output. GPT-5.4 Nano is 128K and Sonar Pro is —.
Do GPT-5.4 Nano and Sonar Pro support reasoning and tool use?+
GPT-5.4 Nano: 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-5.4 Nano or Sonar Pro?+
GPT-5.4 Nano has 2 sourced provider routes; Sonar Pro has 2, a tie.
Which offers better value, GPT-5.4 Nano 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.