GPT-4.1 vs GPT-5.6 Sol
Benchmark Performance
Available Benchmarks
| Benchmark | GPT-4.1 | GPT-5.6 Sol |
|---|---|---|
| ARC-AGI-1verified-v1-15fb467fd4fc · verified_score · leader | 5.506% of row best · percent · GPT-4.1 | 97.50100% of row best · percent · GPT-5.6 Sol (XHigh) |
| ARC-AGI-2verified-v2-9a3db289984e · verified_score · leader | 0.420% of row best · percent · GPT-4.1 | 92.50100% of row best · percent · GPT-5.6 Sol (Max) |
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · leader | 1,382.7195% of row best · rating · gpt-4.1-2025-04-14; 95% CI [1379.00467679, 1386.41941365]; votes 49913; rank 153 | 1,454.69100% of row best · rating · gpt-5.6-sol-xhigh; 95% CI [1449.58093424, 1459.80348090]; votes 23153; rank 35 |
| LMArena Vision Arenavision-2026-08-27-011508720696 · arena_rating · leader | 1,210.3295% of row best · rating · gpt-4.1-2025-04-14; 95% CI [1203.63813827, 1217.00696914]; votes 41034; rank 70 | 1,276.90100% of row best · rating · gpt-5.6-sol-xhigh; 95% CI [1267.71657009, 1286.08047215]; votes 5837; rank 30 |
| Overall ResultCounted from the protocol-matched rows above | 0 benchmark wins | 4 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-4.1 | GPT-5.6 Sol |
|---|---|---|
| Developer | Openai | Openai |
| Family | Gpt 4 1 | Gpt 5 6 |
| Model | GPT-4.1 | GPT-5.6 Sol |
| Version | GPT-4.1 | GPT-5.6 Sol |
| Lifecycle | active | active |
| Released | Unknown | Unknown |
| Knowledge cutoff | 2024-06-01 | 2026-02-16 |
| Input modalities | Unknown | Unknown |
| Output modalities | Unknown | Unknown |
| Context window | 1,047,576 | 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, tools | chat, generation, reasoning, tools |
12 comparable fields · 6 material differences · Interactive comparison only; indexing gate not met
GPT-4.1 Capabilities
GPT-5.6 Sol Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Claude Fable 5.1Anthropic | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
GPT-5.6 SolOpenAI | vs |  Hy4 previewTencent | cross-developer peerstext |
GPT-4.1OpenAI | vs | GPT-5.4OpenAI | family variantsimage, text |
GPT-4.1OpenAI | vs | GPT-5.5 ProOpenAI | family variantsimage, text |
GPT-5.5OpenAI | vs | GPT-5.6 SolOpenAI | family variantsimage, text |
GPT-4.1OpenAI | vs | GPT-5.6 LunaOpenAI | family variantsimage, text |
GPT-4.1 NanoOpenAI | vs | GPT-5.6 SolOpenAI | family variantsimage, text |
 Mistral-Small-4-119B-2603Mistral AI | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
Claude Opus 4.8Anthropic | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
Claude Opus 5Anthropic | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
 MiniMax-M3MiniMax | vs | GPT-4.1OpenAI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
GPT-4.1 vs GPT-5.6 Sol FAQs
Is GPT-4.1 or GPT-5.6 Sol better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-4.1 and GPT-5.6 Sol, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-4.1 or GPT-5.6 Sol?+
GPT-4.1 is $1.00 and GPT-5.6 Sol is $2.00 per million tokens, so GPT-4.1 is cheaper on this metric. GPT-4.1 is $4.00 and GPT-5.6 Sol is $10.00 per million tokens, so GPT-4.1 is cheaper on this metric.
Which has a larger context window, GPT-4.1 or GPT-5.6 Sol?+
GPT-5.6 Sol has the larger sourced context window. GPT-4.1 supports 1,047,576 and GPT-5.6 Sol supports 1,050,000.
Which performs better in benchmarks, GPT-4.1 or GPT-5.6 Sol?+
GPT-5.6 Sol leads the current overall benchmark count. The result uses 4 protocol-matched benchmarks from 2 publishers; it is not a universal quality score.
Can GPT-4.1 or GPT-5.6 Sol be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-4.1 is not marked open weight; GPT-5.6 Sol is not marked open weight.
Can GPT-4.1 and GPT-5.6 Sol understand images?+
GPT-4.1 is not documented with image input; GPT-5.6 Sol is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, GPT-4.1 or GPT-5.6 Sol?+
GPT-5.6 Sol has the larger sourced maximum output: GPT-4.1 supports 32,768 and GPT-5.6 Sol supports 128,000 output tokens.
Do GPT-4.1 and GPT-5.6 Sol support reasoning and tool use?+
GPT-4.1: tool calling. GPT-5.6 Sol: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, GPT-4.1 or GPT-5.6 Sol?+
GPT-4.1 has 2 sourced provider routes; GPT-5.6 Sol has 2, a tie.
Which offers better value, GPT-4.1 or GPT-5.6 Sol?+
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.