GPT 5.6 Terra
GPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between flagship Sol and cost-efficient Luna. It is suited for everyday coding, reasoning, agentic work, and general professional tasks.
- Reasoning
- Vision
- Native PDF input
- Tool Calling
- Structured Output
Added Jul 9, 2026
Pricing
Auto routing · per 1M tokens- Input
- $2.00
- Output
- $12.00
- Cache read
- $0.20
Specifications
- Context window
- 1.1M
- Max output
- 128K
- Avg output (7d)
- 410 tokens
- Longer than 36% of models
Benchmarks
Benchmarks
Sourced from LMArena.
Arena Score
1467.7
Overall Rank
#50 / 419
Votes
50,150
Confidence Interval
1463.6 - 1471.9
Category Scores
Coding
#43 / 414
13,232 votes
1517.6
Math
#38 / 404
2,273 votes
1480.2
Longer Query
#63 / 397
23,318 votes
1468.7
Creative Writing
#74 / 417
10,773 votes
1430.7
Instruction Following
#48 / 419
17,939 votes
1463.3
Hard Prompts
#50 / 419
32,694 votes
1490.4
Additional Categories22
Japanese
#31 / 288
833 votes
1466.8
German
#33 / 320
809 votes
1480.2
Expert
#34 / 369
5,731 votes
1507.1
Industry Mathematical
#34 / 402
2,863 votes
1490.8
French
#37 / 301
1,653 votes
1491.7
Chinese
#40 / 395
3,971 votes
1515.9
Industry Software And It Services
#43 / 419
19,276 votes
1506.7
Non English
#47 / 419
30,019 votes
1457.2
Russian
#47 / 383
5,929 votes
1471.0
Industry Legal And Government
#48 / 392
4,202 votes
1474.9
Exclude Ties
#50 / 419
37,323 votes
1475.4
Industry Business And Management And Financial Operations
#51 / 412
9,248 votes
1465.8
Multi Turn
#53 / 417
8,076 votes
1474.2
Hard Prompts English
#54 / 417
13,031 votes
1490.1
Spanish
#54 / 302
1,557 votes
1459.9
Korean
#55 / 290
973 votes
1424.2
English
#59 / 419
20,126 votes
1471.4
Polish
#62 / 244
752 votes
1461.0
Industry Writing And Literature And Language
#63 / 418
14,118 votes
1447.0
Industry Entertainment And Sports And Media
#65 / 417
12,979 votes
1434.2
Industry Life And Physical And Social Science
#70 / 417
8,145 votes
1476.4
Industry Medicine And Healthcare
#91 / 390
3,580 votes
1461.4
Published 2026-11-06 · Matched as GPT-5.6 Terra (xHigh)
LMArena DatasetProviders
Auto routing is available for this model. Explicit provider selection is not available.
| Cache write /M | ||||||
|---|---|---|---|---|---|---|
 Recommended | $2.00 | $12.00 | $0.20 | $2.50 | N/A | N/A |
| >272k | $4.00 | $18.00 | $0.40 | $5.00 |
