DeepSeek V4 Pro vs GPT-5.6 Sol
Market Position
LiveBench Quality Versus Estimated Output Cost
This current-market view appears only when both compared models are reviewed current models with publisher-reported LiveBench token accounting and current sourced USD output rates.
Benchmark Performance
Available Benchmarks
| Benchmark | DeepSeek-V4-Pro | GPT-5.6 Sol |
|---|---|---|
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · statistical tie | 1,451.00100% of row best · rating · deepseek-v4-pro; 95% CI [1447.00829245, 1454.98663953]; votes 54243; rank 41 | 1,454.69100% of row best · rating · gpt-5.6-sol-xhigh; 95% CI [1449.58093424, 1459.80348090]; votes 23153; rank 35 |
| LiveBench2026-06-25 · overall · leader | 76.7990% of row best · percent · deepseek-v4-pro · 35,014 output tokens / case | 85.26100% of row best · percent · gpt-5.6-sol-max · 11,729 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above · 1 tie | 0 benchmark wins | 1 benchmark winOverall 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 | DeepSeek-V4-Pro | GPT-5.6 Sol |
|---|---|---|
| Developer | DeepSeek | OpenAI |
| Family | Deepseek V4 Pro | Gpt 5 6 |
| Model | DeepSeek-V4-Pro | GPT-5.6 Sol |
| Version | DeepSeek-V4-Pro | GPT-5.6 Sol |
| Lifecycle | active | active |
| Released | 2026-04-24 | Unknown |
| Knowledge cutoff | Unknown | 2026-02-16 |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,049K | 1,050K |
| Total parameters | 1.6T | Unknown |
| Active parameters | 49B | Unknown |
| License | mit | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | DeepSeek (Standard), Deepinfra (Standard), Fireworks Ai (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning | chat, generation, reasoning, tools |
13 comparable fields · 10 material differences · Pair passes the primary-source comparison gate
DeepSeek V4 Pro Capabilities
GPT-5.6 Sol Capabilities
Internal Comparison Graph
Related Comparisons
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|---|---|---|---|
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DeepSeek-V4-ProDeepSeek | vs | Grok 4.6xAI | cross-developer peerstext |
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DeepSeek-V4-ProDeepSeek | vs |  GLM-5.3Z.ai | cross-developer peerstext |
DeepSeek-V4-ProDeepSeek | vs |  Hy4 previewTencent | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | DeepSeek-V4-ProDeepSeek | cross-developer peerstext |
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DeepSeek-V4-ProDeepSeek | vs | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
DeepSeek V4 Pro vs GPT-5.6 Sol FAQs
Is DeepSeek V4 Pro or GPT-5.6 Sol better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both DeepSeek V4 Pro and GPT-5.6 Sol, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, DeepSeek V4 Pro or GPT-5.6 Sol?+
DeepSeek V4 Pro is $0.66 and GPT-5.6 Sol is $2.00 per million tokens, so DeepSeek V4 Pro is cheaper on this metric. DeepSeek V4 Pro is $1.5441 and GPT-5.6 Sol is $10.00 per million tokens, so DeepSeek V4 Pro is cheaper on this metric.
Which has a larger context window, DeepSeek V4 Pro or GPT-5.6 Sol?+
GPT-5.6 Sol has the larger sourced context window. DeepSeek V4 Pro supports 1,049K and GPT-5.6 Sol supports 1,050K.
Which performs better in benchmarks, DeepSeek V4 Pro or GPT-5.6 Sol?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can DeepSeek V4 Pro or GPT-5.6 Sol be self-hosted?+
DeepSeek V4 Pro is the only model in this pair currently marked as self-hostable. DeepSeek V4 Pro is open weight; GPT-5.6 Sol is not marked open weight.
Can DeepSeek V4 Pro and GPT-5.6 Sol understand images?+
DeepSeek V4 Pro is not documented with image input; GPT-5.6 Sol is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, DeepSeek V4 Pro or GPT-5.6 Sol?+
Neither has a larger sourced maximum output. DeepSeek V4 Pro is — and GPT-5.6 Sol is 128K.
Do DeepSeek V4 Pro and GPT-5.6 Sol support reasoning and tool use?+
DeepSeek V4 Pro: reasoning. GPT-5.6 Sol: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, DeepSeek V4 Pro or GPT-5.6 Sol?+
DeepSeek V4 Pro has 6 sourced provider routes; GPT-5.6 Sol has 2, so DeepSeek V4 Pro has broader tracked availability.
Which offers better value, DeepSeek V4 Pro 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.