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Compare / head-to-head

GPT-4.1 nanovsGPT-5.6 Terra

GPT-5.6 Terra leads 3 of 3 shared benchmarks. GPT-4.1 nano is 28x cheaper per token. GPT-5.6 Terra 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 – 3
GPT-5.6 Terra leads
Cheaper per token
GPT-4.1 nano
28x cheaper, input + output
Larger context
GPT-5.6 Terra
1.1M tokens
Provider uptime (30d)
94.2446%
OpenAI
GPT-4.1 nano
OpenAI · released 2025-04-14
textvision
Context
1.0M
Max out
33K
Input /1M
$0.1
Output /1M
$0.4
Cached /1M
$0.025
Scores
7 · 5 core
GPT-5.6 Terra
OpenAI · released 2026-07-09
textvision
Context
1.1M
Max out
128K
Input /1M
$2
Output /1M
$12
Cached /1M
$0.2
Scores
8 · 6 core
Quality

Benchmark matrix

BenchmarkGPT-4.1 nanoGPT-5.6 TerraΔEdge
Reported by both · 3
GPQA Diamond50.3% 92.9% -42.6 ptGPT-5.6 Terra
OTIS Mock AIME 2024-2025 (Epoch AI run)28.9% epoch99.7% epoch-70.8 ptGPT-5.6 Terra
SimpleQA Verified6% epoch43.2% epoch-37.2 ptGPT-5.6 Terra
Only GPT-4.1 nano reports · 3
MMLU80.1% not reported
Aider Polyglot9.8% not reported
AIME 202429.4% not reported
Only GPT-5.6 Terra reports · 4
DeepSWE v1.1not reported69.6%
FrontierMath Tier 4 v2 (Epoch AI run)not reported70.7% epoch
FrontierMath Tiers 1-3 v2 (Epoch AI run)not reported86% epoch
SWE-Bench Pronot reported63.4%
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-4.1 nano minus GPT-5.6 Terra 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

SpecGPT-4.1 nanoGPT-5.6 TerraEdge
Context window1.0M tokens1.1M tokensGPT-5.6 Terra
Max output33K tokens128K tokensGPT-5.6 Terra
Input price / 1M$0.1 $2 GPT-4.1 nano
Output price / 1M$0.4 $12 GPT-4.1 nano
Cached input / 1M$0.025 $0.2 GPT-4.1 nano
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$0.5$14GPT-4.1 nano
Modalitiestext · visiontext · visionTie
Released2025-04-142026-07-09
Cited benchmark scores78
Reliability

OpenAI status

All providers
More matchups

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Which one wins on your data?

Public benchmarks are a starting point. Run GPT-4.1 nano and GPT-5.6 Terra on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.