Compare / head-to-head
GPT-6.1 Solvs
Step 5 Preview
GPT-6.1 Sol and Step 5 Preview do not yet share a public benchmark, so quality cannot be compared apples-to-apples. Step 5 Preview is 3.2x cheaper per token. GPT-6.1 Sol has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0
no overlap yet
Cheaper per token
Step 5 Preview
3.2x cheaper, input + output
Larger context
GPT-6.1 Sol
1.1M tokens
Providers
2 providers
OpenAI · StepFun
GPT-6.1 Sol
OpenAI · released 2026-09-29
textvision
Step 5 Preview
StepFun · released 2026-09-20
textvisionvideo
Quality
Benchmark matrix
0 shared · 0 only GPT-6.1 Sol · 0 only Step 5 Preview| Benchmark | GPT-6.1 Sol | Step 5 Preview | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 0 | ||||
| No public benchmark is reported for both models yet. | ||||
| Only GPT-6.1 Sol reports · 0 | ||||
| GPT-6.1 Sol reports nothing Step 5 Preview does not. | ||||
| Only Step 5 Preview reports · 0 | ||||
| Step 5 Preview reports nothing GPT-6.1 Sol does not. | ||||
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-6.1 Sol minus Step 5 Preview in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-6.1 Sol | Step 5 Preview | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 1M tokens | GPT-6.1 Sol |
| Max output | 128K tokens | 64K tokens | GPT-6.1 Sol |
| Input price / 1M | $2 ↗ | $1 ↗ | Step 5 Preview |
| Output price / 1M | $10 ↗ | $2.7 ↗ | Step 5 Preview |
| Cached input / 1M | $0.1 ↗ | $0.05 ↗ | Step 5 Preview |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $12 | $3.7 | Step 5 Preview |
| Modalities | text · vision | text · vision · video | Step 5 Preview |
| Released | 2026-09-29 | 2026-09-20 | — |
| Cited benchmark scores | 0 | 0 | — |
Reliability
Provider status
Live from /statusBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GPT-6.1 Sol and Step 5 Preview on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.