GPT-6.1 Sol vs Claude Haiku 5.5
GPT-6.1 Sol scores higher on the Models at Work leaderboard (82 vs 74 out of 100). Claude Haiku 5.5 is about 20× cheaper per blended million tokens ($0.20 vs $4). On Artificial Analysis' independent Intelligence Index, GPT-6.1 Sol leads 52 to 43.
| GPT-6.1 Sol · OpenAI | Claude Haiku 5.5 · Anthropic | |
|---|---|---|
| Leaderboard rank | #5 | #7 |
| Score (0–100) | 82 | 74 |
| Tier | Workhorse | Fast and cheap |
| Price per 1M tokens | $2 in · $10 out | $0.10 in · $0.50 out |
| Context window | 1M | 1M |
| Open weights | No | No |
| Artificial Analysis Intelligence Index | 52 | 43 |
| Humanity's Sixth Sense (Scale) | 46.6 | — |
| Best for | OpenAI-standardised teams, Agents API and Decisions API, Cost-controlled reasoning | Classification and extraction, Routing tiers, Latency-sensitive paths |
Choose GPT-6.1 Sol if…
- you need openai-standardised teams
- you need agents api and decisions api
- you need cost-controlled reasoning
Near-Astra intelligence at a fifth of the price, which is OpenAI's own line and, for once, the index agrees.
Choose Claude Haiku 5.5 if…
- you need classification and extraction
- you need routing tiers
- you need latency-sensitive paths
Ten cents a million and, per the people using it, smarter than the other ten-cent model; mind the 100K cliff.
Caveats: Price jumps five-fold above 100K input tokens, which commenters call an absurdly low cutoff for agent runs.
What practitioners say
GPT-6.1 Sol: The launch thread's title did the arguing: 'near-Astra for a fifth of the price' drew 955 comments, most of them about routing.
Claude Haiku 5.5: The thread had over a thousand points in a day; the recurring reports are near-perfect structured classification in production and 'noticeably smarter than GPT-6 Luna', against complaints about the 100K pricing tier.
Questions people ask
Which is better, GPT-6.1 Sol or Claude Haiku 5.5?
GPT-6.1 Sol scores higher on the Models at Work leaderboard (82 vs 74 out of 100). Claude Haiku 5.5 is about 20× cheaper per blended million tokens ($0.20 vs $4). On Artificial Analysis' independent Intelligence Index, GPT-6.1 Sol leads 52 to 43.
When should I choose GPT-6.1 Sol over Claude Haiku 5.5?
Choose GPT-6.1 Sol for openai-standardised teams, agents api and decisions api, cost-controlled reasoning. Near-Astra intelligence at a fifth of the price, which is OpenAI's own line and, for once, the index agrees.
When should I choose Claude Haiku 5.5 over GPT-6.1 Sol?
Choose Claude Haiku 5.5 for classification and extraction, routing tiers, latency-sensitive paths. Ten cents a million and, per the people using it, smarter than the other ten-cent model; mind the 100K cliff.
Which is cheaper, GPT-6.1 Sol or Claude Haiku 5.5?
GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens on OpenAI's list price (OpenAI API pricing, read Oct 10, 2026). Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output tokens on Anthropic's list price (Claude pricing, read Oct 10, 2026).
Scores come from the Models at Work leaderboard: Score is 0 to 100: 50% independent evals normalised within this table, 20% price-performance, 15% practitioner sentiment from Signals and community threads, 15% operational fit (context, speed, availability, open weights). Models within three points are a tie in practice. Vendor-published figures are labelled as such and never counted as independent. Prices are vendor list prices where published; blended figures assume three input tokens per output token.