Claude Sonnet 4.5vs.GPT-6.1 Terra
Which one is better?
GPT-6.1 Terra is clearly ahead in the overall index and is cheaper too: Claude Sonnet 4.5 costs 3 times as much per token.
Claude Sonnet 4.5
Rank 62 to 76
GPT-6.1 Terra
Rank 12 to 27
Claude Sonnet 4.5
slow
GPT-6.1 Terra
fairly slow
Claude Sonnet 4.5
expensive
GPT-6.1 Terra
fairly expensive
Claude Sonnet 4.5
- Subscription
No Anthropic subscription includes this model. Through other providers from ≈ €6.36 a month (ElevenLabs Starter, with limited credits). 44 plans in Germany.
- Via API
$3 input, $15 output per 1M tokens, unchanged since our price tracking began on Aug 14, 2026.
- Note
- There is a successor: Claude Sonnet 4.6 (rank 43 to 54, same price).
GPT-6.1 Terra
- Subscription
Subscriptions in Germany: n/a
- Via API
$1 input, $5 output per 1M tokens.
Overall index with data through Oct 29, 2026 · Prices from Oct 29, 2026 · Speed: measured by Artificial Analysis · Subscriptions as of Oct 24, 2026 · Subscription prices incl. VAT
Where is the difference?
Values from 0 to 100 per task area. We only name a winner when the gap is large enough and there are enough tests.
Sonnet 4.5 ahead: 0GPT-6.1 Terra ahead: 3level: 0too little data: 5of 8 areas
Show 1 more areas that do not count toward the overall index
See for yourself: same task, one attempt
The same prompt for both models. We show the latest attempt without fixes; it does not count toward the overall index.
Pelican on a bicycle
A community classic for free-form SVG drawing.
Claude Sonnet 4.5
Reasoning (requested): high
Current attempt
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- anthropic/claude-sonnet-4.5
- API model reported in response
- anthropic/claude-sonnet-4.5
- Reasoning setting
- high
- Pinned endpoint
- Anthropic | anthropic/claude-4.5-sonnet-20250929
- Temperature
- Provider default
- Token limit including reasoning
- 8,192 tokens
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
- Response time
- 30.2 s
Visually reviewed. This individual test does not establish overall model quality.
GPT-6.1 Terra
Not tested yet
Prompt and test conditions
Generate an SVG of a pelican riding a bicycle
Token limit including reasoning: 8,192 tokens
Task origin (Simon Willison)SVG short test
There is no shared test round for this selection. Results from different rounds are not mixed.
All data side by side
The better value is bold. For the overall index only when the gap is clear.
| Metric | Claude Sonnet 4.5 | GPT-6.1 Terra |
|---|---|---|
| Intelligence | ||
| Overall index0 to 100, higher is better | below 1 | 67 |
| Rank | Rank 62 to 76 of 95 | Rank 12 to 27 of 95 |
| Price per 1M tokens | ||
| Inputwhat you send | $3 | $1above 272,000 tokens: $2 |
| Outputwhat the model writes | $15 | $5above 272,000 tokens: $7.50 |
| Speed | ||
| Tokens per second | 48 | 91 |
| Technical | ||
| Context windowhow much text the model reads at once | 200,000 tokens≈ 300 A4 pages | 1.05 M tokens≈ 1,580 A4 pages |
| Knowledge cutoff | January 2025 | Jun 1, 2026 |
| Released | September 2025 | Oct 26, 2026 |
| Availability | Active | Active |
| Open weights | no | no |
- GPT-6.1 Terra, 12-hour cache write: The table's cache-write rate covers 30-minute retention. With 12-hour retention it is $2.50 per 1M tokens through 272,000 input tokens, $5 above. Source
- GPT-6.1 Terra, Long-context billing: Above 272,000 input tokens, the higher rates apply to the entire request. Input and cache rates double, while output costs 1.5 times the standard rate. Source
- GPT-6.1 Terra, Batch and Flex pricing: 50% off standard pricing Source
- GPT-6.1 Terra, Fast pricing: Fast mode costs twice the standard price Source
- GPT-6.1 Terra, Regional processing: 10% surcharge over standard processing Source
Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis
Shared benchmarks
Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.
A: Claude Sonnet 4.5B: GPT-6.1 Terra
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