GPT-5.4 Pro vs GPT-5.6 Terra
Benchmark Performance
Available Benchmarks
| Benchmark | GPT-5.4 Pro | GPT-5.6 Terra |
|---|---|---|
| ARC-AGI-1verified-v1-15fb467fd4fc · verified_score · leader | 94.5098% of row best · percent · GPT-5.4 Pro (XHigh) | 96.50100% of row best · percent · GPT-5.6 Terra (Max) |
| ARC-AGI-2verified-v2-9a3db289984e · verified_score · leader | 83.3399% of row best · percent · GPT-5.4 Pro (XHigh) | 83.90100% of row best · percent · GPT-5.6 Terra (Max) |
| Overall ResultCounted from the protocol-matched rows above | 0 benchmark wins | 2 benchmark winsOverall lead |
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-5.4 Pro | GPT-5.6 Terra |
|---|---|---|
| Developer | Openai | Openai |
| Family | Gpt 5 4 | Gpt 5 6 |
| Model | GPT-5.4 Pro | GPT-5.6 Terra |
| Version | GPT-5.4 Pro | GPT-5.6 Terra |
| Lifecycle | active | active |
| Released | 2026-03-05 | Unknown |
| Knowledge cutoff | 2025-08-31 | 2026-02-16 |
| Input modalities | Unknown | Unknown |
| Output modalities | Unknown | Unknown |
| Context window | 1,050,000 | 1,050,000 |
| 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) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | chat, generation, reasoning, tools |
12 comparable fields · 5 material differences · Interactive comparison only; indexing gate not met
GPT-5.4 Pro Capabilities
GPT-5.6 Terra Capabilities
Primary Evidence
Sources and Freshness
Questions
GPT-5.4 Pro vs GPT-5.6 Terra FAQs
Is GPT-5.4 Pro or GPT-5.6 Terra better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-5.4 Pro and GPT-5.6 Terra, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-5.4 Pro or GPT-5.6 Terra?+
GPT-5.4 Pro is $30.00 and GPT-5.6 Terra is $2.00 per million tokens, so GPT-5.6 Terra is cheaper on this metric. GPT-5.4 Pro is $180.00 and GPT-5.6 Terra is $12.00 per million tokens, so GPT-5.6 Terra is cheaper on this metric.
Which has a larger context window, GPT-5.4 Pro or GPT-5.6 Terra?+
Neither model has a larger sourced context window in this comparison. GPT-5.4 Pro is 1,050,000 and GPT-5.6 Terra is 1,050,000.
Which performs better in benchmarks, GPT-5.4 Pro or GPT-5.6 Terra?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can GPT-5.4 Pro or GPT-5.6 Terra be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-5.4 Pro is not marked open weight; GPT-5.6 Terra is not marked open weight.
Can GPT-5.4 Pro and GPT-5.6 Terra understand images?+
GPT-5.4 Pro is not documented with image input; GPT-5.6 Terra is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, GPT-5.4 Pro or GPT-5.6 Terra?+
Neither has a larger sourced maximum output. GPT-5.4 Pro is 128,000 and GPT-5.6 Terra is 128,000.
Do GPT-5.4 Pro and GPT-5.6 Terra support reasoning and tool use?+
GPT-5.4 Pro: reasoning and tool calling. GPT-5.6 Terra: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, GPT-5.4 Pro or GPT-5.6 Terra?+
GPT-5.4 Pro has 2 sourced provider routes; GPT-5.6 Terra has 2, a tie.
Which offers better value, GPT-5.4 Pro or GPT-5.6 Terra?+
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.